Billy is a hamster with a big heart who dreams of becoming a real cowboy. But what does he need to make his dream come true? First of all, some intrepid and unique companions: Jean-Claude the worm and Suzie the ferret will be his best allies. Then, a real cowboy hat, and finally, adventures, lots of adventures. A story full of twists and turns, where the little aspiring cowboy will learn that you are a hero when you help and protect the people around you. Adapted from the books by Catharina Valckx, which highlight the values of friendship and solidarity.