Minton loves things that move - boats, planes, cars, trucks - and he finds just what he needs to make them. Now he's going to make a submarine to take him and Turtle back to their island home. But Turtle is nervous about deep-sea monsters, and although they escape a shark they surface near the north pole. How will they get home from there? As usual, Turtle is very gloomy about the prospect.
Instructions are included for children to make Minton's submarine out of everyday kitchen materials.