TV producer Cheng-ho is having the time of his life. His career is going well, and he also starts living with his fiancée. But ever since he picks up a red envelope in a park, he keeps having nightmares about an old mansion. After paying a visit to a psychic, he realizes that it is the memory from his previous life. Senior high school student Yin-yin has been seeing things that don’t “exist” since her childhood. Lately, such vision occurs even more frequently, leaving her quite adrift. She is aware that she can see ghosts, but she chooses to ignore them. Until one day, she gets possessed by a female ghost when she does her swimming training. The mystery of Cheng-ho’s previous incarnation and the distance between Yin-yin and the underworld all come together in a mysterious way…