Mysterious buttons appear in the worlds of Tanya the Evil, KonoSuba, Overlord, and Re:Zero. When the characters push them, they're taken to a place they'd never imagined...

Now that everybody's settled in, it's time for the first day of school, which means everybody has to introduce themselves.

The students begin to wonder about why they are here, and what this school really is. Tanya, in particular, has a theory about Ains...

The students realize that they're all from other worlds, and begin to share their backgrounds. But some are luckier than others...

It's time for the talent show, but none of the students are talented at all. The KonoSuba crowd in particular...

It's time to pick the class rep! But Aqua doesn't want Ains to do it, and Albedo doesn't want Aqua anywhere near the job.

Emilia's the class rep now, but it's really hard. But she wants to do her best!

It's time for a field trip to the beach, and the gang's getting ready. But who wants to see Kazuma in a swimsuit?

The field trip is here, and it's great! Everybody's at the beach and having a great time. But Tanya hears something that makes her upset...

It's time for Field Day, and Roswaal hints that whoever wins will get to go home. But then they meet their opponents...

The mobile fortress "Destroyer" has joined the last game! It's up to the quartet to grab its headband and win the game.