A squid girl with a superiority complex vows to exact revenge upon humanity for polluting her ocean home, but ends up working as a waitress as a beach-side restaurant.

Squid Girl is disappointed when she meets the "protector of the sea"; Squid Girl decides she wants a birthday party; Eiko's friend takes a creepy liking towards Squid Girl.

The gang take Squid Girl on a test of courage at the local cemetery; Squid Girl becomes frightened when inflatable killer whales start appearing; a new girl at the stand is a bit nervous around Squid Girl.

Squid Girl gets a reward for finding a lost wallet; Squid Girl is invited to sleep over at the Aizawa household; while exploring the beach, Squid Girl and Eiko find an imitation Squid Girl.

A woman believes Squid Girl to be an alien; Squid Girl thinks Eiko's school is a military base; Sanae dreams that Eiko finds a Mini Squid Girl and keeps it as a pet.

A hero show is performed on the beach for the kids; Eiko asks Squid Girl to teach her how to study; Gor rescues Nagisa from drowning.