In this spoof of The three little pigs, Mama tells her three little fish that it's time to seek their fortunes. Jim builds a house of seaweed and Tim builds a house of sand, but it's up to Kim to find the house that will stop the big bad shark's munching and crunching.

Illustrations and simple rhyming text introduce six pairs of animal twins, that moo, hop, swing, swim, flap, and hoot their way through the day.