The manga follows Kurumi Ayaki, the newest member of the Unsolved Crimes Division, Special Unit B.

Kurumi Ayaki has recently retired from her job as a police officer but she needs money for her upcoming wedding.

While she wants to return to her old job in the Traffic Department, she is instead assigned to Unsolved Crimes Division, Special Unit A to solve crimes that are deemed "unsolvable" and partnered with the genius inspector Himuro.

Kurumi resigned from her job to marry her fiancé Shingo but, because of the recession and of the money he had to borrow to buy her wedding ring, she has to postpone her marriage plans and accept her new job with Kōzaburō Himuro.

A year before the events of Remote, he lost someone dear to him and he shut himself in the basement of his house ("the crypt").