Once upon a time in a teeny-tiny village, a teeny-tiny mum and a teeny-tiny dad have an ermousbaby. They call him Baby Boomsticks! The other villagers and babies are scared of such a big baby, so Baby Boomsticks has to play all by himself. But one day Baby Boomsticks claps his hands like thunder, and rain falls and falls until the village is flooded. Oops! Can Baby Boomsticks save the day?