This feature is the story of a 12-year-old chimney sweep living in the year 1850. Unjustly accused of stealing silver, Tom runs off with his dog Toby, jumping into a river. They meet sea creatures. Tom and Toby are first greeted by some fish and pair of frogs. Tom also meets an eel, a killer shark, a sea horse, a salmon, a walrus, and others. The boy realizes he's underwater and can't swim, until the water babies teach him. An otter tries to attack Tom. Once away from the otter, Tom tries to rescue a lobster from his cage.