The bugs are sent on an errand but Squiggz is led astray when he comes across a child's submarine abandoned in a tide pool. From the moment our hero leaps aboard it's all hands on deck for the adventure of a lifetime. The sub is swallowed by a very big fish as Grandpa, Flutter and Cosmo are attempting the wackiest rescue on the seven seas. Grandpa soon joins Squiggz "in the belly of the whale" and there he recounts the humorous tale of another fellow he once knew who found himself in much the same predicament. His name was Jonah. By the time Flutter and Cosmo pass themselves off as "fresh bait" on a fisherman's hook, help land the giant fish, and reunited with Grandpa and Squiggz, everyone has learned an important lesson about obedience, God's awesome love, and the amazing power of forgiveness.