A documentary-style production featuring sisters in casual clothing enduring intense urinary retention in a room equipped with four unmanned cameras. The participants already feel a strong urge to pee at the start, and must continue holding it until a timer sounds. After the first timer goes off, an additional 15-minute timer begins, creating an even more intense challenge. The film realistically captures each sister's unique struggle and endurance, emphasizing a deep fetishistic fascination with urination.