Snowflake is the school rabbit. Tommy doesn't like him, and when he's unexpectedly left for him to look after - everything starts to go wrong. Even if he is getting more pocket money for feeding him and might be able to afford a new bike after all. But, with a sick sister left in bed, a snobby actor left with suspiciously damp trousers, and no rabbit anywhere to be seen, Tommy can see his hopes of a new bike disappearing as fast as the rabbit. Will Snowflake turn up, and turn out to be more good luck than bad? Or are Tommy and his family doomed by the curse of the school rabbit?