Every day, we see hundreds of people in the subway. What could their lives be like?

A young girl takes the Paris metro every day to go to school. She uses her commute to observe the other passengers. She wonders: what will that little girl be when she grows up? Where does that man in a cap live? What does that gray-bearded man do for a living? Who will that woman give those flowers to? And what are this girl's own dreams? This playful, ingenious, and very funny book unfolds as a gallery of colorful portraits each associated with quirky, comical situations revealed beneath flaps that readers can lift.