Her husband is away on a work assignment, and Riho works as an office lady, striving to maintain her position as a married woman. At the office, she constantly stays on guard around Sasaki, the department head, hiding the fact that she's married. However, Sasaki repeatedly subjects employees to insensitive sexual harassment and power harassment on a daily basis. Though Riho feels uncomfortable with his behavior, she inexplicably becomes aroused each time he scolds her. One night, Sasaki forces her to work overtime, and as she glances at his desk, she suddenly finds herself drawn to it, stepping into his space. While masturbating at his desk, she is unexpectedly caught in the act by Sasaki, who returns to the office. In that instant, their relationship takes a dramatic turn.