Korean movies, [Family Fun], I don't understand. From the beginning to the end, the protagonist helps four ghosts complete their tasks, the old man's camera and the smoker's car.

The hero tried to commit suicide because his life was not smooth, but he didn't die after trying various methods. In the hospital, he saw four ghosts that others couldn't see, an uncle who loves smoking, a jealous grandfather, a lively child and a crying aunt. As a result, when he was telling his fortune, the fortune teller told him that he could not send these people away. Only when the hero fulfilled the wishes of their four ghosts could they leave voluntarily. Then the protagonist began to fulfill their seemingly meaningless wishes, helping grandpa find a camera, helping his uncle borrow a car to go to the seaside, accompanying the children to watch movies and cooking with his crying aunt. In this process, I met a girl, and the hero fell in love with her. After fulfilling the four ghosts' wishes, the four ghosts reluctantly left, and finally the hero angrily drove them away. The hero also gave up suicide because he liked the heroine. On a lunch date between the hero and heroine, the heroine asked the hero why there was no spinach in the laver rice, but only celery. The hero replied that it was because his mother said celery was good for his health. At this moment, the hero suddenly remembered that when he was young, his father bought a car and had an accident on the way out with his mother, grandfather, brother and himself. Only the hero survived, and then lost his memory because of the blow. He just remembered that the ghost uncle who often smokes is his father, the crying aunt is his mother, the jealous grandfather is his grandfather, and the troublemaker is his brother who has always cared about him. At the end of the film, the hero and heroine get married and have children. Then why didn't the four ghosts tell the man who they were at first? Because the jealous grandfather said, the dead don't ask, and the people in the underworld can't say. The film also tells the world to live well, because living carries too many people's joys and sorrows.