Twelve-year-old Josh yearns to be "big," and when he makes that wish at a carnival, his dream becomes reality: He awakens the next morning as a 30-year-old man!Josh (Tom Hanks) heads for Manhattan, where he lands a job at a toy company and draws the attention of a beautiful co-worker (Elizabeth Perkins). His child's-eye view helps Josh climb the ranks, but despite his corporate-world coup, he finds himself pining for all he left behind.