In the movie "Big," Josh Baskin, a 13-year-old boy who makes a wish to become "big" at a carnival fortune-telling machine, wakes up the next morning as a 30-year-old man. Throughout the film, Josh experiences the challenges and responsibilities of adulthood while also trying to find a way to return to his original age.
Toward the end of the movie, Josh realizes that he has been neglecting his relationships and responsibilities in pursuit of success and fame. He learns that being an adult is not just about having a physical transformation but also about the emotional and moral growth that comes with it.
Josh decides to embrace his age and responsibilities and make amends with those he has wronged. He returns to his job and reconciles with his girlfriend Susan, who has been hurt by his neglect. He also makes amends with his parents, who have been worried about him.
In the final scene, Josh makes another wish at the fortune-telling machine, this time wishing to return to his original age. The machine grants his wish, and he wakes up as his 13-year-old self again.
Josh returns home and reunites with his family and friends. He has learned valuable lessons about growing up, the importance of relationships, and the joy of being a child. The movie ends with Josh embracing his childhood and celebrating his newfound appreciation for life.