A very hot afternoon in Berlin; schools are closed. Two sisters, Malin and Sophia, are stuck in their stuffy apartment constantly on the verge of boredom. While Sophia does not want to be disturbed reading, her little sister tries to get her attention by telling her that she has forgotten her toy penguin Pomito at school. The two of them invent possible scenarios for the penguin and send him on a journey that takes him through the empty school building and on an accidental trip on the garbage truck, which finally brings him to the real penguins at the zoo.