Lala Kudo, forced into compensated dating by her stepfather, runs away from home and wanders the night streets, where she meets an older man with a disabled leg. The man lives in poverty, and out of determination to support his livelihood, Lala resolves to engage in compensated dating. Gradually, she begins to fulfill his sexual needs, forming an imperfect yet profound bond between them. However, her actions are discovered by her stepfather, leading their lives to face drastic changes.