Hikari lives apart from her husband, and their sex life has long since dried up. One day, she accidentally catches her daughter having sex with her boyfriend. The shock sends her emotions into turmoil, awakening something deep inside her. When her daughter is away, the boyfriend comes by to pick up a forgotten item. Reunited after some time, he confesses to her: "I've always had feelings for you, Mom. I can't hold back anymore." His youthful, pent-up desire explodes, drawn irresistibly to Hikari's big tits and sensual body. Though she silently pleads, "No... I absolutely must not cum...!", her resistance is futile. Overcome with shame, she repeatedly orgasms under his relentless advances. Betraying her daughter, she finds herself unexpectedly enjoying the sex