Friendship Games out of Water

This idea begs the unasked question, "What if Sponge out of Water & Friendship Games were released as 1 movie?".

Plot
After the discussion of an incident where Sunset Shimmer chases after a rather familiar-looking mysterious hooded girl scanning the CHS statue, the story suddenly shifts as a book read by a pirate known as Burger Beard, who was reading about the endless fights between underwater restauarants The Krusty Krab & long-time rival The Chum Bucket due to the former's secret formula for their top menu item, the Krabby Patty. One time, however, the formula disappears just as Plankton, owner of The Chum Bucket, tries to take away the formula from SpongeBob, fry cook of The Krusty Krab. Plankton is chased by The Krusty Krab's customers, but is saved by SpongeBob, who was with him when the incident happened. Soon, Bikini Bottom degraded into an apocalyptic wasteland, with everyone but Karen, Plankton's wife, turning on him & SpongeBob. Burger Beard ends the story there, but the listening seagulls want it to continue, & in a fight, rip off the page with "The End!" written on it as a seagull throws it in the ocean.

Back at CHS, a pep rally takes place, and Rainbow Dash suddenly "ponys up" without her guitar shortly after. Vice Principal Luna tells them to ensure they don't use their magic as to not cheat. Sunset is tasked with investigating her friends' magic, & writes a letter about it to Princess Twilight Sparkle. Meanwhile, the Twilight Sparkle of the human world is convinced by Principal Cinch to join the Shadowbolts to compete with CHS, with the reward of applying for Everton. While that's all happening, SpongeBob & Plankton unsuccessfully get their friends to help them, as all of them were affected by the loss of Krabby Patties. Luckily, Karen was still loyal to Plankton, so they rescue her (as she was incarcerated by the mob) & with her help, they travel back in time to retrieve the formula before it disappeared. In their quest, one of their destinations was in the middle of space, where they meet Bubbles, who attacks them after the duo screw up with watching Saturn & Jupiter while he took a bathroom break, with the fear of being fired. They escape before he could hurt them any further, & manage to go back to the actual tine the formula disappeared to retrieve it. Burger Beard, back on shore, with the formula in hand, starts his own food business & makes the seagulls flee with hot wings.

Crystal Prep is welcomed into CHS, where Sci-Twi meets the Rainbooms, & is confused when she finds out they know her. Pinkie clarifies that the Twilight they're meeting is the Twilight from this world, also considering she looks different. Her amulet causes problems, however, as the portal to Equestria is rendered useless. Back under the sea, Sandy tells everyone of her conspiracy theory when SpongeBob & Plankton return with the formula, but turns out, they accidentally grabbed Plankton's decoy instead, which was a hate letter from him. The townsfolk plan to sacrifice them, with Plankton baselessly blaming SpongeBob, who suffers a breakdown until he stops. After coming to, SpongeBob then volunteers to be sacrificed, but they smell Krabby Patties before they can go through with it.

SpongeBob, Plankton (hiding in one of SpongeBob's socks), Mr. Krabs, Patrick, Squidward, Sandy, & Gary all go oversea, & with the help of Bubbles (who was actually sick of his job), gain the ability to breathe in land. Once they emerge from a sand castle, they're smacked away by a little boy, all the way to CHS, where they meet the Rainbooms & Shadowcolts. That's when Pinkie Pie starts a welcoming party for Crystal Prep & the Bikini Bottom crew. However, when Pinkie ponys up, Sci-Twi's amulet takes her magic away. Principal Cinch then gives a speech rather arrogantly on how Crystal Prep will win the games once again, which is proven later on.

Later, Sci-Twi accidentally drains Fluttershy's magic, & soon after a Equestrian jackalope appears gives Spike the ability to talk. As the Friendship Games continue, an argument between Sunset & Sci-Twi ensues after Rainbow Dash's magic is taken from her. But at the same time, SpongeBob & crew find Burger Beard, who banishes them all to Pelican Island with his book. At the final event of the Friendship Games, Sci-Twi is forced to unleash their magic for them to win, transforming into Midnight Sparkle. Burger Beard is also there too as a sponsor selling Krabby Patties. But by then, SpongeBob & friends return as superheroes, unwittingly leaving Plankton behind.

After confronting Midnight Sparkle, Sunset restores everyone's magic & becomes Daydream Shimmer, & while she battles Midnight, our aquatic superheroes take on Burger Beard, with help from the Rainbooms. Daydream successfully defeats Midnight, but the former also gives her her hand, which she accepts. They then decide to go after the plunderous pirate as well. But even when they come to help, Burger Beard proves too powerful for them, & gets away with the formula. However, before he leaves, he is stopped by Plankton, now a muscular superhero known as PlankTON. The pirate splatters hot sauce on his eye & tries leaving, but everyone uses their powers to stop him. He is especially disoriented by PlankTON, who, together with SpongeBob/Invincibubble blows into the latter's bubble wand, enrapturing Burger Beard in a wave of bubbles. Once the formula is retrieved, PlankTON kicks Burger Beard all the way to Bikini Atoll. The former gives back the formula to Mr. Krabs, as they celebrate with the games ending in a tie, our heroes putting their hands in the middle, Sci-Twi enrolling for CHS instead, & Invincibubble singing.

They have an outdoor picnic shortly after, but that's when Princess Twilight FINALLY arrives, meeting her counterpart, SpongeBob, & his friends. Once all is settled, the latter group says goodbye to CHS & return to Bikini Bottom, where things go back to normal, including Plankton reverting back as Mr. Krabs' rival. After being turned down earlier, Burger Beard allows himself & the seagulls to sing the SpongeBob theme song, with Bubbles interrupting with a rap battle before they finish. As the credits roll, pictures of the people at CHS & our undersea heroes spending good times together, as well as the latter group dancing to a mashup of "Right There in Front of Me" & "Squeeze Me". After the credits have finished rolling, Gary continues chasing Plankton like he did earlier.

Cast

 * Tom Kenny - SpongeBob (past & present versions), Gary, Frenchy, Agreeable Mob Member, Waffle
 * Rebecca Shoichet - Sunset Shimmer, Sci-Twi (singing voice)
 * Doug Lawrence - Plankton (past, present, & robot versions), Fred, News Anchor Fish, Mob Member
 * Tara Strong - Sci-Twi, Twilight Sparkle
 * Ashleigh Ball - Human Rainbow Dash, Human Applejack
 * Antonio Banderas - Burger Beard
 * Clancy Brown - Mr. Krabs
 * Andrea Libman - Human Pinkie Pie, Human Fluttershy, Sweetie Drops
 * Bill Fagerbakke - Patrick (present & future versions), Male Fish, Eager Customer
 * Tabitha St. Germain - Human Rarity, Vice Principal Luna, Human Derpy
 * Iris Quinn - Prinicipal Cinch
 * Rodger Bumpass - Squidward, Doctor Gill Gilliam, Angry Mob Member #2, Doughnut, Squidasaurus Rex
 * Carolyn Lawrence - Sandy
 * Eric Bauza, Tim Conway, Eddie Deezen, Rob Paulsen, April Stewart, Cree Summer, Billy West - Seagulls
 * Nicole Oliver - Prinicipal Celestia
 * Britt McKillip - Dean Cadence
 * Cathy Weseluck - Puppy Spike
 * Matt Berry - Bubbles
 * Jill Talley - Karen, Shubie, Ice Cream Cone #2
 * Paul Tibbitt - Kyle, Helpful Angry Mob Member, Himself
 * Sienna Bohn - Sugarcoat
 * Sharon Alexander - Sour Sweet
 * Kelly Sheridan - Indigo Zap
 * Britt Irvin - Sunny Flare
 * Shannon Chan-Kent - Lemon Zest, Pinkie Pie (singing voice)
 * Vincent Tong - Human Flash Sentry, Bus Driver
 * Kevin Michael Richardson - Andy
 * Dee Bradley Baker - Perch Perkins, Sandals, Customer #1, Fish on Bubble, Angry Fish, Maple Syrup Jar, Waffle, Ice Cream Cone #1, Furballs, Giant Cute Kitty, Rainbow, Spotlight Guard, Angry Guard #1, Tough Mob Member
 * Andrew Francis - Shining Armor
 * Pat Pinney - Painty
 * Lori Alan - Pearl
 * Kazumi Evans - Rarity (singing voice)
 * Carlos Alazraqui - Seagull, Dead Parrot
 * Nolan North - Seagull, Dead Parrot, Pigeon Cabbie
 * Nice Peter - Surfer Dude #1, Seagull, Painty (rap voice)
 * Epic Lloyd - Surfer Dude #2, Seagull
 * Stephen Hillenburg - Himself, Baby on Stroller
 * Lillian Ellen Jones - Sandcastle Girl
 * Riki Lindhome - Popsicle #1
 * Kate Micucci - Popsicle #2
 * Brody Rose - Kicking Boy
 * Mary Jo Catlett - Mrs. Puff
 * Sirena Irwin - Computer Voice, Shocked Mob Member
 * Thomas F. Wilson - Angry Customer #1
 * Mark Fite - Customer #2
 * John Brown - Food Truck Patron
 * David Dickson - Man Eating Krabby Patty

Music

 * Paramount Pictures Logo - Michael Giacchino [Paramount logo.]
 * Friendship Games [Opening credits]
 * performed by Rebecca Shoichet, Ashleigh Ball, Andrea Libman, Shannon Chan-Kent, & Kazumi Evans
 * composed by Daniel Ingram
 * You're Nice - Sage Guyton, Jeremy Wakefield [Story begins]
 * Thank Gosh it's Monday [After the story, as the Bikini Bottomites celebrate Monday in song]
 * performed by Tom Kenny, Bill Fagerbakke, & Clancy Brown
 * composed by Tom Kenny, Deborah Lurie, & Eban Schletter
 * Plankton Attack/Tank Defeat/Giant Robot/Trying to Steal Formula - John Debney [The Krusty Krab vs. Plankton/Plankton breaks in the safe]
 * Gator - Steve Belfer ["Hey, it's raining fries/pickles!"]
 * Hawaiian Walk - The Blue Hawaiians [Sandy at the Krusty Krab drive-thru]
 * Saltwaterworks - Nicolas Carr, Sagr Guyton, Jeremy Wakefield - ["Plankton" gives up his last penny to Krabs]
 * Escaping on a Bubble - John Debney [Plankton in Krabs' safe/SpongeBob rescue Plankton from the mob]
 * Torturing Plankton/Refund - John Debney [Tensions build up with the formula's disappearance]
 * The End/Get Him - John Debney [The fake ending]
 * CHS Rally [Rainbow Dash rallies CHS for the Friendship Games]
 * performed by Ashleigh Ball
 * composed by Daniel Ingram
 * Bikini Bottom News Theme - Nicolas Carr [Sandy turns on the TV]
 * What More is Out There? [Sci-Twi sings this to herself on her way to Cinch's office]
 * performed by Rebecca Shoichet
 * composed by Daniel Ingram
 * Teamwork [SpongeBob helps Plankton understand the essence of teamwork]
 * performed by Tom Kenny & Doug Lawrence
 * composed by Riki Lindhome & Kate Micucci
 * Getting the Key/Rescuing Karen - John Debney [Plankton & SpongeBob break Karen out of her prison]
 * Brahms' Lullaby - Johannes Brahms [Patrick falls asleep]
 * Everybody Polka! - Glenn Rueger (EVO) [At Taco Haus]
 * Squeeze Me - N.E.R.D [Time travel warp scenes]
 * Intro Bubbles - John Debney [SpongeBob & Plankton at Bubbles' observatory]
 * Stealing Formula Back/Pirate Ship And Food Truck - John Debney [SpongeBob & Plankton time travel to when the formula disappeared/Burger Beard arrives on land/Closing credits #4]
 * My Very Own Food Truck/Sandy Proposes Sacrifice - John Debney [Burger Beard sets up shop/SpongeBob & Plankton return to the present]
 * The Ecstasy of Gold - Ennio Morricone [SpongeBob's speech]
 * Bubbles to the Rescue/Beach Search For Krabby Pattys - John Debney [Bubbles helps the crew arrive on land]
 * The Music in my Mind [SpongeBob's crew sings this in their heads once they arrive at the beach]
 * performed by Tom Kenny, Bill Fagerbakke, Clancy Brown, Rodger Bumpass, Carolyn Lawrence, & Doug Lawrence
 * composed by Daniel Ingram
 * I Hate People [Squidward sings this after everyone flees his clarinet solo]
 * performed by Rodger Bumpass
 * composed by Kaz, Rodger Bumpass, Nicolas Carr, Sage Guyton, & Jeremy Wakefield
 * Love's Theme - Barry White ["Where have you been all my life?"]
 * 12th St Rag (w•washboard) - Sage Guyton, Jeremy Wakefield [SpongeBob & Patrick eat cotton candy]
 * Here We Go - Steve Johnson, Chris Slack [SpongeBob & Patrick's sugar rush]
 * ACADECA - [The Academic Decathlon takes place]
 * performed by Rebecca Shoichet & Tom Kenny
 * composed by Daniel Ingram
 * Beachfront Antics/Bike Path Encounters/Home Of The Krabby Patty - John Debney [SpongeBob's team tracks Burger Beard down]
 * Story Rewrites/Invincabubble - John Debney [SpongeBob rewrites the story to their favor/SpongeBob's crew returns as superheroes]
 * Unleash the Magic [Crystal Prep coerces Sci-Twi to use her device]
 * performed by Iris Quinn & Rebecca Shoichet
 * composed by Daniel Ingram
 * Chasing Burger Beard/Teamworked - John Debney [The Mane 7 & SpongeBob's superhero team go after Burger Beard]
 * Not So Fast Burger Beard/Plankton/Real Teamwork - John Debney [Last minutes of the final battle]
 * Best Day Ever [SpongeBob & the Rainbooms perform this]
 * performed by Tom Kenny, Rebecca Shoichet, & Ethan Slater
 * composed by Tom Kenny & Andy Paley
 * Hawaiian Adventures aka SpongeBob Theme - Sage Guyton, Jeremy Wakefield ["We'd like 3,000 Krabby Patties!"]
 * Buggy Girl - David Hamburger, John Hunter Jr., Jonathan Slott (OneMusic) ["See you later, te-ammate!"]
 * SpongeBob SquarePants Theme Song [Painty & the seagulls sing this]
 * performed by Pat Pinney, Devin & Caryn Johnson, Sara Paxton, Camryn Walling, Harrison Fahn, & Elan Garfias
 * composed by Derek Drymon, Stephen Hillenburg, Mark Harrison, Blaise Smith
 * Rap Battle [Bubbles faces off with the seagulls in a rap battles, trading insults]
 * performed by Matt Berry, ERB, & Pat Pinney
 * composed by Peter Shukoff & Lloyd Ahlquist
 * Squeeze Right in Front of Me [Closing credits #1]
 * performed by Rebecca Shoichet, N.E.R.D, Tom Kenny, Doug Lawrence, Ashleigh Ball, Andrea Libman, Shannon Chan-Kent, Bill Fagerbakke, Clancy Brown, Rodger Bumpass, Kazumi Evans, & Carolyn Lawrence
 * composed by Daniel Ingram & N.E.R.D
 * Patrick Star - N.E.R.D [Closing credits #2]
 * Sandy Squirrel - N.E.R.D [Closing credits #3]

Trivia

 * Executive producer Stephen Hillenburg said that this was neither really part of the SpongeBob movie series or Equestria Girls TV-movie series, but the events in this movie do happen in both continuities.
 * No SpongeBob character, including the ones introduced in this movie, were seen in trailers, nor hinted by any of the crew in order to keep their appearances secret. They were only revealed in future TV spots 1 day after the movie released in America, & soon hogged up most of the post-release marketing.
 * In addition, this movie was released in America first to avoid other countries spoiling that SpongeBob characters were in the movie online.

Other links

 * Friendship Games out of Water/Transcript