The married woman Nanako, summoned to a daytime hotel, is caught having an affair by her husband's subordinate. However, she shows no remorse, thinking, "I can just keep it a secret from my husband, right?" In order to punish this brazen wife, the subordinates forcefully insert a large penis into her impudent mouth and ravage her throat until they are satisfied. Eventually, her inherent masochistic tendencies begin to surface, and she transforms into a cuckolded wife who willingly drinks the semen that is ejaculated into her.
