While her husband is away on a business trip, Yumi, a busty mother, devours her cheating partner and has sex with him. Nao, a beautiful daughter with beautiful breasts, develops each other's pleasure spots and indulges in lovey-dovey sex with her boyfriend. A mother seduces her daughter's boyfriend, and her daughter is attacked by her cheating partner. Beautiful big breasts and eroticism are hereditary...A mother-daughter story in which the big breasts of each woman shake as they seek sperm in their vaginas.