Due to her husband's infidelity, younger sister Hikaru has moved in with her older sister and brother-in-law. Trying to find a job to support herself, the naive young woman—who only has experience working in cabaret clubs—struggles to land legitimate employment. When she discovers that the company where she finally secured an interview is where her brother-in-law works, she pleads with him for help. Under the guise of conducting a mock interview, he makes her wear a swimsuit and proceeds to sexually toy with her youthful body.