Steelworker Chen has a passion for music and plays the accordion in a local band with a close group of friends. When his estranged wife returns one day after years of absence, she demands a divorce and sole custody of their daughter. Chen is at a loss. He doesn't mind divorcing a woman who has become a stranger, but he can't bear to part with his daughter. Chen has worked hard to give her a respectable life and has taught her his love of music. When asked if she'd rather stay with her father or go with her mother, the girl gives a practical, devastating answer: she'll go with whomever can provide her with a piano. Chen cannot afford such a luxury item, but the piano becomes his last hope to save what little is left of his family. With the help of his loyal friends and the support of his lover - the singer in his band - Chen concocts several plans to fulfill his daughter's wish...
Detective Jung-soo faces the victims of brutal murders who were killed for no reason and this makes him outraged. During the investigation, he meets Ji-hyun who is the only survivor and marries her, but they cannot escape from her tragic past. One day, Jung-soo's partner, So-young, arrives at the crime scene where she finds Jung-soo crying out in sorrow with his wife and daughter in his arms who are found viciously murdered after they went missing. But as the police and the law let the suspect go because for lack of evidence, Jung-soo decides to take vengeance himself on those unpunished killers and the cruel world.
When a new stewardess joins the night shift crew of the train, she find that some mystic events become occur during the train night run. As the film goes we see that the train has more hidden secrets that lead to a suspicion that it might be linked to the crash of the same train several years ago. The 'spooky' train becomes a living thing and slowly starting to claim victims. Will the lady be able to stop this or all of the people aboard this train doomed?
