Mami Shirasawa became a lawyer at the young age of 20, as she chose to take the preliminary judicial examinations. Now with a large law firm, she has yet to be assigned a case, despite her competence. When a colleague drops a case, Mami is eager to take it on. Her first client is Yoriko Watanuki, a woman who was sexually assaulted by the son of the owner of a large construction company. Predictably, the accused has denied wrongdoing and had tried to cover his tracks by using his money and influence and by twisting the victim's words around to suit his purposes.