With Grandpa out of town, Kukuru and Fuuka work together to feed and weigh the penguins. Kukuru notices something wrong with one of the penguins, and decides to call the vet, who is on maternity leave.

With the Gama Gama Aquarium soon to be closed, Kukuru is desperate to find ways to keep it afloat. She tries to figure out a way to market the illusions that people had been witnessing there.

Kukuru is tasked with coming up with ideas for an event, but her proposal comes with some serious challenges.