While at the beach Arale Norimaki rescues a shark. In return, the shark invites her and the rest of the Norimaki to their underwater city. Meanwhile, Suppaman intends to follow them and get revenge.

Dr Slump creates a little android girl, Arale, very stong, happy and totally common senseless. They live in Penguin Village where the strangest things happen (i.e. the dawn is announced by a little ...