New nurse Nami is assigned to accompany a middle-aged doctor, who suffers from sexual harassment issues, on nighttime house calls. That day, she already feels unwell with stomach troubles and struggles to hold back her urge to defecate during the car ride. Despite writhing in pain, she barely reaches the patient's home—only to lose control and soil herself at the front door. Meanwhile, saleswoman Aya struggles to deal with a malicious client while enduring an overwhelming urge to poop. With the client refusing to let her use the toilet, she ends up having a terrible accident. Later, Nami must assist in surgery, unable to leave during the procedure. Tormented by her growing need to defecate, she eventually soils herself mid-operation. The film follows how these two women cope with sudden, uncontrollable urges and the messy consequences that unfold during their workday.