Sixteen-year-old Mamoru Kusaka has recently moved to Tokyo to live with his aunt and uncle after the death of his mother. Just as he is beginning to adjust to his new life, his uncle is involved in a late-night accident while driving his taxicab. A young coed is dead and Uncle Taiko is charged with manslaughter, even though the circumstances seem suspect.
Struggling to help his uncle, Mamoru discovers that the victim had been involved in a cruel scam with three other young women. Two of the four have also recently died in similarly violent incidents.
Several days after the accident, a powerful businessman comes forward as a witness. But instead of making things clearer, the mans testimony only adds more confusing lies and deceptions to an already puzzling case, as Mamoru races to save the last of the four women targeted by the real killer.