Mummy Pig and Daddy Pig are going out so Granny and Grandpa Pig are baby-sitting. Peppa and George are put to bed but are too excited to sleep. Everyone has such fun that they exhaust themselves.

Peppa and George are in the garden when they hear a strange noise. It's thunder! Peppa and George are a little bit frightened at first but Peppa decides that she loves thunderstorms. They make big, muddy puddles!