Yuma rides her husband, swaying her hips as she drowns in pleasure. Just after climaxing, she looks down at him—only to find he's already dead. Dressed in mourning clothes, Yuma draws curious stares from male relatives. Her late husband's older brother suspects murder for insurance money and begins investigating the truth. One day, her nephew visits and rapes her—but Yuma orgasms repeatedly. He keeps coming back to assault her, growing increasingly violent each time. Eventually, told she's been given an aphrodisiac, something is applied to her body, gradually awakening her insatiable lust and driving the story into shocking new territory.