Sex isn't something one plans. It just happens. Yoko is a 23 year old pink collared worker. After college she is kept close with Yokoyama and Ishida, two male college friends who both harbor feelings for her. Yokoyama is straight as an arrow, yet impulsive when it comes to love. Ishida is more the outspoken type. When Yokoyama proposes to her, Yoko wonders if the old marriage myth is true. Is settling down with an 'ordinary' guy the key to a happy marriage?