Tom's class has a film and a presentation from a policeman about not going with strangers and never taking sweets from a stranger. Tom is a little worried by all this and has to learn to use his common sense and not always to take the instructions absolutely literally. In three separate episodes he does just that. This is a sensible approach to a real problem. The cheerful drawings help the text along, and make an enjoyable story out of what could be only a moral tale.