 In a world where toys are living things but pretend to be lifeless when humans are present, a group of toys, owned by a boy named Andy Davis, are caught off-guard when Andy's birthday party is moved up a week, as his family (including his mother and infant sister Molly) are preparing to move the following week.Andy's toys – including Bo Peep the shepherdess, Mr.Potato Head, Rex the dinosaur, Hamm the piggy bank and Slinky Dog – fear that they will be replaced by new toys from the birthday.