A little mouse and his friend Gustave go out to play one afternoon in this darkly comic story about the sadness of losing a friend and the joy of making a new one. The mouse’s mother has always warned the young friends not to stray too far from home. There is a cat, she says, and it is dangerous to go far away. But danger doesn’t stop this curious pair, and soon they find themselves face-to-face with their big blue-eyed enemy. In a feat of bravery, Gustave allows his friend the chance to escape but is gobbled up by the cat in the process. Heartbroken, the little mouse must return home without his friend and tell his mother what has happened. A sweet surprise ending turns this melancholy tale of friendship into a strangely funny book.