Runa Tsuki, a slender office lady working as a designer in Tokyo, gets caught up in an incident where she accidentally injures the son of a client's company president. Proud and reluctant, she has no choice but to visit the president to apologize—only to be completely dominated by him. The tea he serves her is laced with a diuretic, which she unknowingly drinks. Despite repeatedly apologizing, she is denied access to the bathroom and ultimately forced to suffer a humiliating public accident right there. Holding her weakness over her head, the president then subjects her to relentless blackmail, forcing her into obedient blowjob sessions and toy torture. Unable to resist, she repeatedly wets herself in desperation. Gradually breaking both her mind and body, the film depicts her extreme condition—forced into repeated creampie and pissing scenes, pushed beyond her limits until she climaxes uncontrollably through sheer helplessness.