After defeating deadly curses from the previous Pee Nak films, the old crew go on to live their peaceful lives. The hot Thai-Korean star Do Min Joon is busy with fan meetings, while Balloon and First sweep their ways up to become top talent managers. It sounds like a happy ending. But a new chapter of horror is awaiting them at the Ghost Mask Festival. The Ghost Mask Festival is a local festival to worship the spirits of ancestors, sacred entities that protect their offspring and bring prosperity and abundance. Do Min Joon , Balloon and First happen to be on holiday during the festival. They arrive to follow up on the restoration of a mural painting at a temple where Do Min Joon’s family is a patron. But the festival of virtue is tainted by bad karma when a mysterious blue-eyed man returns to demand Do Min Joon to fulfill his promise – the promise that he cannot recall when he made it or what it is about exactly.