Fuka wanders off to Okinawa after quitting her idol job in Tokyo. There, she meets Kukuru, who is the director at Gama Gama Aquarium.

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.

Aquarium Tingarla is visited by a TV crew who is there to document a penguin hatchling’s growth. Fuuka wants to turn down her opportunity to be on TV again.