Anju is a 28-year-old young wife who secretly accumulates luxury goods, racking up massive debt without her husband's knowledge. Desperate for money, she turns to online sugar dating. But her first encounter is with a perverted man obsessed with outdoor training. Meeting repeatedly in love hotels under the guise of sugar dating, Anju's latent masochistic side begins to awaken. Their twisted games escalate rapidly—she's humiliated at public hot springs, forced to urinate in public on walking paths, and pushed further into degradation. Eventually, caught in a heavy downpour, she's taken bareback, her face twisting into an ahegao as she climaxes, fully transformed into a shameless, masochistic sex slave and cumdump.