One rainy night, a young man wakes up in what appears to be a warehouse. On his right arm is an attached handcuff. The chain is connected to the left hand of a mysterious girl named Shiina. She seems to call him by the name Joe, but she doesn’t remember anything. In fact, neither of them have any recollections of anything prior to their awakening. “What exactly am I?” Without a single idea of what’s going on, the two of them search for an exit. Before long, they come across the corpse of a woman wearing a white robe. “… Who killed her?” Appalled by the situation, the fire they were using as light began to engulf their surroundings in flames, as the mysterious characters make a run for their lives. Once they make it outdoors they begin to wander around, until they encounter a female detective by the name of Kobayakawa… As any good detective would, she tries to apprehend the potential witness of the crime. However, without any memories or clue of what’s going on, the two panic and escape from her. The handcuffed pair are now suspects to a crime and are on the run. A boy and girl who are bound by cuffs. Memory loss. Escape. What truth lies behind their lost memories?