Su Yuxi, a high school student in Mifila City, has a strange dream, and a string of bizarre events follows. There's Frost, a mysterious and terrifying contact; Mikhail, a peculiar transfer student; and a magic box in the basement of the school's administration building... Su Yuxi longs to learn the truth behind it all, but the tragic, dark truth is more than she can bear. In the end, in order to survive, she resolutely takes a stand against it all...