Mashiro works for a law firm in Kagurazaka. It takes 2 hours for him to commute one way. Kyoko works at the counter in a real-estate agency in Yurakucho. It takes 2 1/2 hours for her to commute one way. They meet each other in a 'double-suicide room' in Nishi-Shinjuku on a pre-arranged day. They are in love and planning to die together.