During a scorching summer, a delivery worker becomes obsessed with a customer's wife after glimpsing the sweaty cleavage beneath her loose clothing. One day he discovers an adult toy in her parcel, and she smirks at his flustered reaction before aggressively making her move. From then on, she dominates his body and mind, using him like a human dildo. Her overwhelming, sweat-soaked riding does all the work until he helplessly creampies her without thrusting once.