A series of bizarre murder cases occurred in Osaka. The murderer's killing method was extremely special. He would kill people brutally and carve or cut a beautiful cherry blossom on the back or a certain part of the body of the deceased. With the help of a paleontologist, Detective Kawamoto learned a major secret hidden in the Sakura murder case. The complicated investigation that followed made the case even more difficult to find. The enemy was cleverly placed in the police station and became a traitor. In a remote small house tracking the murderer, Kawamoto was hit on the head. He accidentally lost his memory and was thrown into a desolate desert. He survived after a tenacious struggle. However, although he escaped from the desert, he walked into the enemy's trap again, and was instigated by others to use him as their killing tool. In his doubtful behavior, he unexpectedly discovered the clues he had left behind. His memory prompted him to search hard. When he found the book again, scenes of terrible nightmares reappeared in his mind, and the road under his feet would become even more bizarre and dangerous...