Read part 1 and 2 on the SteamWiki and Sonic News Network if you haven't!
Steam Dimensions is inspired by Lego Dimensions.
The Monsters are now free from their Underground Prison, and now made many friends with the humans.
2 years later...
Frisk was putting up posters for Papyrus' upcoming Spaghetti Festival.
Frisk: Papyrus told me its gonna be great! Better put up the posters everywhere in the neighbourhood.
On the day of the festival...
In the local park, there were many stalls. There was also a huge speaker blasting out "Bonetrousle". Many humans and monsters were there, Engrodey seems to be enjoying leftover spaghetti.
Papyrus: Nyeh heh heh! Welcome to my Spaghetti Festival!
The Skeleton was in the middle creating spaghetti. It was a new recipe, so it didn't taste bad.
Chara: How do I eat this with just a knife...?
A rift suddenly appeared behind Chara! The "Real Knife" was also being sucked up!
Chara: W-w-w-whats going on?
Asriel: CHARA!
Frisk: What happened!?
Sans: who dares to create that portal?
The rift disappeared. A few seconds later. Another rift appeared. Sonic came out of it!
Sonic: My head... Wait, where's Tails?
Sonic looked everywhere in the plaza, there was no trace of Tails anywhere. Then, Sans approached him.
Sans: were YOU the one who created the portal? if yes, you're gonna have a bad time!
Sonic: It wasn't me!
Another rift appeared.
Sonic: That's the same portal that took Tails!
Sans: it also took chara!
Sonic: Is that so? Then let's find them together!
Sonic and sans jumped into the portal.
Frisk: I... Have to admit, Sans's puns are bad, is anyone happy without him?
Everyone agreed.
Continued on the Cuphead Wikia.
Episode 1 - The Foundation Altar
Episode 2 - Chaos Emerald Snatched!
Episode 3 - The Spaghetti Festival
Episode 4 - Inkwell Dance-Off!
Episode 5 - The Portal
Episode 6 - Prop Mayhem!
Episode 7 - Our first Keystone
Episode 8 - Vs Machines!
Episode 9 - A Familiar face
Episode 10 - I'm your Neighbour!
Episode 11 - 6 a.m.
Episode 12 - Collided Hill Zone
Episode 13 - Roller Coaster Mayhem
Episode 14 - Aperture Laboratories
Episode 15 - Zombies!
Episode 16 - Bloons Invasion!
Episode 17 - Geometric World
Episode 18 - Deadlocked!
Episode 19 - Steam
Episode 20 - Collision of Dimensions
Episode 21 - Getting Help
Episode 22 - Showdown Time!