In a poor family with a father and two daughters, the older sister gets a job in the city to help with the family finances, but the father collapses in the countryside. The older sister, needing money, borrows money and is forced to work in a shady place. She resists, but ends up being forced into prostitution. The younger sister, worried about her older sister, comes to Tokyo and ends up being raped herself to help her sister. The two sisters are forced to engage in lesbian sex and fall into depravity, but they find an opportunity to escape. However, they can't escape, and are captured and are fucked by the men, but before they know it, her body responds.