In "Big," a 13-year-old boy makes a wish at an antique fortune-teller machine to be big—his body grows overnight, but he remains the same child inside. Now, he must navigate the unfamiliar world of grown-ups, learning to cope with getting a job and his first romantic encounter with a woman. As Josh navigates this new reality, he finds himself torn between his love for childhood simplicity and the excitement of adult life, leading to both hilarious misadventures and poignant self-discovery.