It's truly forbidden! The Mirror Van will fully back up your chances to have sex with your coworkers! A man and a woman who work in the same office are approached on the street and suddenly negotiate for sex! When they are alone in the MM Van, the man's desire to have sex, which he couldn't express even if he wanted to, explodes! Will the two of them, who are in a work relationship that has a higher hurdle than friends, cross the wall that should not be crossed and get caught?