Everyone in the world has a birthday. But birthdays are not celebrated in the same way everywhere. Meet Mercedes in Peru, who eats a cake and a purple pudding called mazamorra morada. Ieva in Latvia is raised in the birthday chair, one lift for each year. And rather than celebrating his own birthday, Phuc Khang in Vietnam joins in the festivities during Tet, when everyone in the country turns one year older. Based on interviews with real people, award-winning author Margriet Ruurs tells the unique birthday traditions of seventeen children from all around the globe.