On a night when blood and fine snow fell, the little king of hell was unable to stop the tragedy. In the midst of grief, he discovered that the possessed girl seemed to have her own consciousness.
Although the girl lost her memory, she finally kept the remaining soul. The Little King of Hell proposed an exchange condition to the underworld demon sealed in her body, and the two parties reached a consensus that one person and one demon would settle down in the spiritual world with new identities.
But as the girl explores a past she has never been told, the dominoes of destiny that were suspended move forward again...