Yuna is a newlywed who lives with her husband, whose business plan has failed. Hoping to make ends meet, she applies for a part-time job with a delivery company. An experienced driver older than her husband teaches her the job. Although he teaches her step by step, he continues to sexually harass her, and she is eventually seduced and forced into a physical relationship... Yuna gradually falls in body and mind to this violent and rough man, who is different from her sexless husband.