Zou is preparing to leave for a school camp. He doesn't want to seem like a baby, but he knows that he will miss all his daily kisses: the bedtime kisses, the morning kisses, the no-reason-at-all kisses . . . But Zou needn't worry. Mum and Dad have a solution. They make dozens of paper kisses and put them in a box for Zou to use whenever he feels a bit lonely. But the box of kisses comes in surprisingly useful on the train . . .