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

A penguin egg is about to hatch at Tingarla. The penguins team is set to stay the night at the aquarium, but Chiyu can’t make it, so Kukuru offers to take her place.

The director announces a new research facility to be built at Tingarla. Two people will be chosen to study at a similar facility in Hawaii.

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