Riri Nakayama lost her mother and newlywed husband, leaving her isolated in a world of loneliness. Longing to reunite with her father who disappeared when she was a child, she moves into a new apartment and spends her days alone. In her solitude, she repeatedly masturbates desperately, seeking comfort. When complaints arise about her moaning being too loud, she seduces the building's manager with her beautiful legs wrapped in pantyhose, escaping trouble through a skillful footjob. Later, an unknown man breaks into her room, but instead of fleeing, she allows him to comfort her, culminating in creampie sex. One day, by chance, she reunites with her long-lost father, who lives in the same building. Overcome with emotion, she desires him, craves his cock, and reaches climax after being filled with her father's incestuous creampie, expressing overwhelming pleasure.