Mei Midorikawa is in an exchange program that has brought her to Taiwan. There, she is introduced to Yongqing, the top student of the academy who is tasked to showing her around campus. Just as Mei is getting to know her classmates and creating a place for herself at the school, she encounters an eerie presence in an empty classroom. That night, a mysterious and beautiful girl called Huijin appears in her room. After interacting with Huijin, an incident breaks out which forces Mei to return to Japan. Years later, Mei is trapped in a tough marriage…and what appears before her is a letter from Yongqing, warning her to “be careful”…
The beautiful woman Mei met in the foreign country was not the person she thought she was. This love…will kill.