Teenage boxer Ginji died and got himself reincarnated as a penguin to stay close to Minako, the girl of his dreams. Now, "Gin-chan" must perish of natural causes to be restored to his former self...

Summertime means beaches, girls in bikinis, and penguins on the loose! But all this fun isn't without its consequences. Poor Gin-chan discovers that he's just fathered an egg. Ginji claims innocence because he's still unfamiliar with his own penguin plumbing, but how's Minako going to feel about her two-timing penguin?!

Things really heat up when Minako and her girlfriends put their bikinis on and head to the beach to cool off. Ginji, spending the summer selling ice cream, fishing, and playing matchmaker for his human friends, is shocked to discover he's just fathered an egg. Although he claims innocence because he's still unfamiliar with penguin plumbing, how is Minako going to feel about her two-timing bird?