Deltarune: The Movie 2

Deltarune: The Movie 2 is a film based on the 2021 game Deltarune: Chapter 2. It is a surreal sci-fi action movie released on September 17, 2026. The movie contains 2D computer-generated animation. The ratings on Rotten Tomatoes and iMDb were slightly higher than the ratings on its prequel. The movie is also known as Deltarune: A Cyber's World.

Summary
Kris and Susie are back, and they've discovered a second Dark World in the local library. Ralsei returns as well to save their world from being covered in darkness. They meet Queen, the totalitarian ruler of her world, who has captured Noelle. She has also recruited Berdly, Kris's incredibly incompetent smart classmate. Eventually, the Lightners close off their second fountain of the week and go home. Kris then breaks free of the player again and makes a Dark Fountain in the living room.

Full Plot
Toriel finds Kris's knife and scolds them because they ate her pie overnight. Regardless, she takes them to school, and Susie is waiting. After class, Susie takes Kris to the closet again, only to be interrupted by Noelle, who has a crush on her. She invites Susie to the library to study. After the conversation, Kris and Susie jump into the closet to the Castle Town again. Ralsei greets them, but everyone else is gone. He tells Kris to go and pick up the objects in the unused classroom and bring them. When they come back, everyone returns. Ralsei explains that Lancer's world is gone, and the citizens can only exist in a place with a Dark Fountain. Ralsei takes the Lightners to his castle.

He shows them the rooms that he made for him. Afterwards, Susie decides it's time to go to the library. Lancer and Rouxls Kaard come with, but they turn into cards in the Light World. When they go to the computer lab, they find another Dark World. Rouxls falls out of Kris's pocket, but Lancer stays. There are plug-themed cats, and they find Noelle in a cage. Queen, the one who imprisoned her, introduces herself and reveals her plan. She wants to make another Dark Fountain to expand the Cyber World. Queen turns the cats into Werewires by using plugs. Ralsei saves the Lightners and they move along the Cyber Field. They're looking for Noelle.

The gang slides down as a boombox man named Sweet attacks them. The field is based off of computer chips, and Ralsei teaches Kris and Susie about recruiting enemies. Eventually, they come across Queen again, who challenges them to an arcade game battle. The game is very similar to Punch-Out!, with Kris vs. Queen. Kris wins the fight and continues onward. They go recruiting other Cyber people, like a hacker, some viruses, and more Werewires. Later, Sweet comes back with his band mates, Cap'n and K_K. The trio (called the Sweet Cap'n Cakes) challenges the Fun Gang to a dance battle. Neither of the groups win, as they just dance together. The Sweet Cap'n Cakes then go to set up a shop.

Kris and Susie spot a rollercoaster made by Queen. They ride it, but so does Berdly, Kris's "smart" classmate. The coaster is a part of a smart theme park Queen is building. The Fun Gang fights against them, but the coasters crash and everyone lands in Cyber City. Susie splits up and goes with Ralsei to explore, leaving Kris alone. Kris finds Noelle, Berdly, and Queen. They all form truces with each other as Noelle hides. She then joins Kris on their journey as her crush on Susie becomes more prominent. Noelle also becomes entranced and begins to enjoy the Cuber World more than the Light World. There is another encounter with Queen, so she makes a disguise and hides.

During this, Berdly shows up with a terrible statue of him. Queen just escapes and Noelle comes back. She starts solving a few mouse-related puzzles with Kris, slowly overcoming her fear. Eventually Berdly spots them again, being as snarky as usual. Kris and Noelle fight him as he fake-apologizes to Noelle. She puts her disguise on as Queen takes them on a trip further in. There's a traffic jam, so Kris is sent out to stop it. They meet a former salesman named Spamton, who makes a deal with them and leaves. The traffic jam is stopped and Queen lets everyone go. Noelle tells Kris about how much she misses her sister Dess and Kris's college-bound brother Asriel along the way.

Eventually the duo reunites with Susie and Ralsei as they make their way towards the fountain. Everyone except Ralsei finally gets caught and captured by Queen, and so does Berdly. Kris pulls out the spade card, which turns into Lancer and breaks everyone out. He begins to feel sick afterwards. The four of them go to solve some puzzles in Queen's mansion, which leads to Berdly revealing the truth. He says he's only smart thanks to Noelle, and that he won't fight them again. When they meet Ralsei again, Lancer turns to stone and dies. Ralsei explains he died because he was in the wrong Dark World. The fountain in Castle Town is made of PURE darkness, which means anyone can survive there. The Cyber Fountain isn't pure.

Susie bids what's left of Lancer goodbye and they traverse the mansion. The Fun Gang has to fight multiple staff members to move forward. Queen challenges them multiple times too. On the third floor, Berdly takes Susie to save Noelle. Kris and Ralsei continue on an inflatable swan over an acid lake. They seem to be getting closer with each other. After solving its puzzles, they fight a familiar foe: Rouxls Kaard. He's riding their old duck machine, and he loses. Then he turns to stone for the same reason that Lancer did. Meanwhile, Susie gets together with Noelle and ride a Ferris wheel outside of her room. Berdly also admits that he has feelings for Susie too after the ride. Noelle gets pissed.

When they reunite, Queen traps Berdly in the same plug from earlier and fights the Fun Gang. They free Berdly and beat her. She talks about the Knight like the King did, and how they made the fountains. They stabbed the ground, projecting their determination into their weapon. Queen climbs into a giant robot suit after the exposition. Luckily, Berdly helps them make their own suit and win against her again. Noelle feels bad, and says she's gotten attached to the Dark World. Berdly apologizes for real and almost makes another fountain. Ralsei stops him and explains the consequences. If too many fountains appear, the Darkners will turn to stone, and Titans will awaken and destroy the Lightners.

Queen didn't realize this, so she turns over a new leaf. She says that she just wanted Noelle to be happy, and decides to join Kris's team. Susie goes with them to seal the second fountain, although the Cyber World would no longer exist. Everyone reenters the Light World, and they're in the computer lab in the library. They all go home, but not before Kris brings the Cyber people to Castle Town. Lancer and Rouxls are back and better than ever. Then Kris takes Susie over to their house for a sleepover. However, when Kris goes to "tidy up", they remove their soul again and slash Toriel's tires. Susie falls asleep watching TV, but Kris stays up. Toriel calls the cops, and Kris makes a Dark Fountain in the living room.

Cast

 * Kris: Jason Ritter
 * Susie: Abbi Jacobson
 * Ralsei: Mike Rianda
 * Noelle: Ariel Winter
 * Berdly: Finn Wolfhard
 * Queen: Scarlett Johansson
 * Lancer: Neil Patrick Harris
 * Rouxls Kaard: "Weird Al" Yankovic
 * Spamton: Tom Kenny
 * Sweet: Justin McElroy
 * Cap'n: Griffin McElroy
 * K_K: Travis McElroy
 * Swatch: Wang Leehom
 * Tasque Manager: Jane Lynch
 * Nubert: Chris Pratt
 * Toriel: Cate Blanchett
 * Undyne: Olivia Olson
 * Alphys: Tara Strong
 * Asgore: John DiMaggio
 * Sans: Danny Devito