The manager of a restaurant leaves his only daughter at a 24-hour daycare in the bustling downtown area. The childcare worker Hikari, as she devotedly supports the daughter, gradually becomes drawn to him. On the manager's day off at his home, after closing time at the restaurant, and at dawn in the daycare, separated by a single wall where the daughter sleeps. Shedding her childcare worker's attire, she seeks the father as a woman. An early morning secret meeting where they stifle their voices and copulate beside the sleeping children.