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.

The touch pool, where people are invited to touch sea creatures with their own hands, is the biggest event of the summer at Gama Gama Aquarium. Kukuru, Kai, Kuuya and Fuuka are hard at work to prepare.

Fuuka’s mother comes to Gama Gama Aquarium to take her home, but she isn’t ready to leave just yet.

With shaved ice a success and new visitors drawn to Gama Gama Aquarium, Kukuru’s grandfather insists that the crew take a break.

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.

A year has passed since Gama Gama closed, and Kukuru has found work at Aquarium Tingarla. But for some reason, she’s assigned to Marketing.

Fuuka has returned to Okinawa to find a dejected Kukuru, struggling to do well at work.

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

It’s been a while since Kukuru and Fuuka had the same day off, so they host a get-together with their coworkers.

A dolphin is lost in the waters near Tingarla. Kukuru is eager to check up on it, but she is busy preparing for an upcoming project proposal, so the staff take turns visiting the dolphin.

Aquarium Tingarla is hard at work preparing to carry out the aquarium wedding project that Kukuru spearheaded.