Though she's a polite housewife to the delivery man, in reality, she had ordered a vibrator to relieve her sexual frustration. Right after receiving the package at her doorstep, she immediately starts testing it and forgets to stamp the delivery receipt. As a result, the delivery man returns and catches her in the act of masturbating. Flustered, she quickly pulls him into the house, pleading with him to keep it a secret—only to be overpowered and pinned down. Amidst tension and embarrassment, a strange, intimate relationship begins to unfold between them.