Shibata, thirty-four, works for a cardboard-tube manufacturer, where she is assigned chores because she is a woman and treated inappropriately by her manager. After impulsively claiming to be pregnant, she begins living as a false expectant mother and, through people she meets at maternity aerobics, encounters the realities of pregnancy and loneliness.

After beginning to pose as pregnant, Shibata steps away from the emptiness of her workplace and confronts loneliness and the gaze of others surrounding pregnancy.