1)
The Aizawa sisters run the business at the sea "Lemon" where they serve beach goers.
During their busiest hour, a strange girl appears before the younger sister Eiko.
A hat with three points, wavy, water-colored hair, and a white one-piece suit.
She calls herself Squid Girl and claims to be a messenger from the sea who's come to subdue humanity.
When Eiko tries to dismiss her ludicruous speech, she unleashes the wrath of Squid Girl.

2)
Squid Girl is stuck working for the house at the sea "Lemon".
Being worked so hard, she feels down when a shadow creeps up on her.
When she tries to run from that shadow, her tentacles are grabbed.
When she turns around, she sees a boy's face, full of curiosity.

3)
Due to the rain, the Lemon is deserted.
Because of the chill, Squid Girl sneezes and covers the older sister Chizuru in a black liquid.
When Chizuru licks this liquid...
She realizes it's tasty tasty squid ink.
When Squid Girl finds out that humans eat spaghetti mixed with squid ink...
For us creatures of the sea,
Für uns Bewohner der Meere
¡Para las criaturas del mar,
Para las criaturas que habitamos en el mar,
Pour nous,
les êtres vivants de la mer,
Para nós, as criaturas do mar,