Under the rule that women may urinate only when time is up in front of a hidden camera, this film lets you enjoy their intense struggle to hold it in. Starting with strong urges, each woman displays a unique and detailed resistance. When the timer goes off, an additional 12-minute countdown appears—unknown to them. The moment they open the box and discover this twist, their shock and panic become the highlight. As they continue enduring, they share personal stories about peeing, pressing down with their fingers, writhing their legs and hips, desperately fighting the urge. Relief upon the timer ending is short-lived—once they open the box and realize the truth, they curse in despair but resume holding it in. This time, four women end up wetting themselves. [Saya]'s pee runs down her left leg, soaking her leg and shoe as if she'd walked through heavy rain. [Mahiru] tries various poses to endure, but breaks down upon seeing the extra timer, trembling occasionally while letting out lewd moans. [Yuzuki] is a composed, mature older sister type, but as time drags on, she grimaces, grows anxious, blushes during urination, and averts her gaze. [Eri] gasps for breath under the pressure, her speech slurring in the later stages. Despite crossing her legs and resisting, she collapses helplessly—her tights stained with urine. [Mizuki] is a young, lively beauty. Unable to hold it while sitting, she starts walking and accidentally leaks while apologizing. Full facial exposure as part of the Female Excretion Society.