Even amid a sudden downpour, it makes no difference to the two of them. An illicit affair between a boss and his subordinate begins as they set off on a trip to a hot spring. Losing all sense of time, their desire to satisfy each other continues to grow. The boss becomes obsessed with his subordinate's voluptuous breasts, sucking on her tits as his arousal builds. In the bathroom and in the room, they passionately grope each other's bodies, relentlessly fucking to experience ultimate pleasure and reach climax together.