A career woman named Kana, who serves as the department head at a major corporation in Tokyo, has been struggling with high expectations from her company, heavy workload, and growing distance between herself and her husband. She also finds herself troubled by her strained relationship with her subordinate, Yoshino. One day after work, she becomes intoxicated and reveals her vulnerability to Yoshino, who takes advantage of this moment to expose her hidden masochistic tendencies. From then on, every afternoon during his lunch break, Yoshino calls upon Kana to meet him at an SM hotel where he dominates her both physically and mentally, transforming her from a composed office lady into a submissive masochist who experiences pain mixed with pleasure. It should be noted that the contents of the recording may vary depending on the distribution method used.