Maki Tomoda, a voluptuous married milf, finds herself overwhelmed by desire when her son's friend, Shinni, stays over at her house. Faced with his toned, athletic body, her lust becomes uncontrollable. That night, she invites him for a drink and, unable to resist, starts touching him—eventually giving in and sucking his cock. Though she only meant to tease, Shinni becomes addicted to her sweet taste and begins visiting her more and more frequently. But as their intense sexual encounters escalate, Maki's body starts to break down under the strain of his insatiable stamina.