“Big Potato” is the nickname of the young boy, Dai Doudou. He loves to play pretend aeroplanes, and one day his friends gather in a large crowd, queueing up to be passengers in his 'plane'. They wait and wait, until they get bored and decide to play pretend trains instead. In the end they still set off together, headed toward Paris! This story of a group of friends playing a game is told from a child's viewpoint, showing their conversations and actions, revealing their thoughts and feelings. Full of childlike innocence and fun, it is sure to please the little ones!