Rei Okumori has a secret: he killed his father to protect his mother. Now he is trying to become a lawyer and also has plans to marry his girlfriend, Sawa, a classmate from university who is also the daughter of chief prosecutor Hiroaki Tachibana.
Rei is worrying about the messages he is getting. Also, his father's body has disappeared from the backyard. And if that was not enough, this starts to have an impact on his relationship with Sawa.
Rei feels the pressure to discover who is threatening to expose his secret, while Sawa starts to distrust him. But he is not the only one with secrets in danger of being exposed.