Yuika, a sex doll who indulges in pleasure with a vibrator in her bare pussy, can't stop masturbating despite being handed over to the customer soon. She is re-educated using a big cock, forced to deepthroat and swallow the semen, learning to prioritize her master's pleasure. With her hands and feet restrained in an M-spread, she is relentlessly attacked by a giant cock head, trembling and feeling intense pleasure. Before being handed over, she is creampied by her master's passionate training, and with the big cock reinserted into her creampied pussy, she is bonelessly focused on her last sex with her master. One day, while being adored by her new master in lovely lingerie, unknown men's hungry gazes pierce through her. As they eagerly lick her entire body, she becomes highly excited. Her new master's rock-hard cock rips through her vaginal wall, her legs shaking. She drowns in the massive amount of semen, climaxing in ecstasy as a sex doll.