Surprise Birthday Party! Heroes Alliance's Best

Stampy finds out that the entire Heroes Alliance Base is empty. However, shadows appear. Could it be Megamo?

Story
(Stampy finds out all of the city is empty.) (Stampy goes to the base, which is also empty!) (The light automatically switches on) (As the Heroes Alliance party on... Vrak sees his archenemies dancing in the base...) (Meanwhile, as the Heroes Alliance dance in the party...) (A blast from Vrak's eyes changes the party into an RPG party!)
 * Stampy: "Hello? Hello? No-one is here. Hello?"
 * Stampy: "Hello? The light's off! Megamo? Show yourselves or..."
 * All of the Heroes Alliance: "Surprise!" (all laughing)
 * Isaac the Earth Adept: "Happy Birthday, Stampy!"
 * Tensou: "Happy Birthday."
 * Optimus Primal: "Well done on having your birthday party thrown!"
 * Stampy: "Yes, Primal."
 * Optimus Prime: "Well, brother, it seems to have Megamo tricked!!"
 * Optimus Primal: "Well done, brother, on organising the party!!"
 * He-Man: "Let's Party!"
 * Vrak: "So, the Maximal Lone Rabbit Stampy is having a birthday party, eh? Loogies, get them!"
 * Optimus Prime: "Get to the Maypole!"
 * Red Power Ranger: "Any chance for Musical Chairs?"
 * Greymon: "Making Musical Statues out of stone? No problem!"
 * Spider-Man: "Everybody!"
 * Brave Little Toaster: "Everyone, form a conga line!"
 * All of the Heroes Alliance: "Right!"
 * Xandir the Spellcaster: "Wait for me!"
 * All of the Heroes Alliance: (sung, repeated multiple times) "Come on! Do the Conga!"
 * Vrak: (whispers to Megamo) "Attack the base? No problemo!"
 * He-Man: "Oh no! Vrak!"
 * Captain Simian: "What are you doing here, evil alien?"
 * Bucky O'Hare: "Try not to ruin our birthday party!"
 * Optimus Prime: "Archers, fire!"
 * Vrak: "Retreat! You hear me!"
 * Megaforce Rangers: "We are victorious!"