Three middle schoolers, Yasaka Kazuki, Kuji Toi and Jinnai Enta encounter Keppi of the Kappa Kingdom. Butt stuff happens, and the three are enlisted to fight kappa zombies.

Kazuki goes to unthinkable lengths to make his kid brother, Haruka, happy, including deception and theft.

Having no way to express his feelings for Kazuki, all Enta can do is to try to get him back in the soccer club.

Kazuki needs Toi’s help to take over Sara’s fan meet. Meanwhile, Toi has his own demons to fight.

Kazuki’s plot to highjack Sara’s fan meet goes sideways when it turns out there’s more to her than meets the eye.

Having failed to defeat the previous kappa zombie, the three are stuck as kappa. Meanwhile, Reo and Mabu become more desperate for kappa zombies.

With things returning to normal for the three, they begin playing soccer together, but someone seems not to be happy with that.

Chikai wants Toi to leave town with him. He bumps into Enta, and they go on a walk around as they share their predicaments

Enta and Keppi are both in critical condition. Meanwhile, Toi and Chikai flee from town, only to run into even more trouble.

Enta has four hours left to live. The only way to save him is with the Dishes of Hope, but Reo also needs them to bring back the real Mabu.

Enta and Kazuki follow Toi, who is going into the past to remove himself from existence.