Takuro, a magazine reporter, is haunted by a murder case from ten years ago that involved his mother and younger sister. On the tenth anniversary of their death, while offering flowers at the crime scene, he finds the wallet his late sister used to carry. Who on earth left the wallet there, and for what purpose? Or could it be that his sister is actually still alive...? A suspense story begins as he delves into the truth behind the left-behind wallet and touches upon the darkness of the human heart!