Former athlete and office worker Toyama Maki volunteers for extreme submissive training and is reduced to a helpless masochistic toy for a group of men. They clamp her erect nipples, hook her nose, choke and face-stomp her during sex, force her to deep-throat until she gags and drools, make her drink urine, and drive her into squirting and bladder-emptying orgasms with toys and a thick dildo. Her face is covered in cum as she flashes a vacant orgasm face and loses control. Double blowjobs, finger deep-throating and a line of men forcing their cocks down her throat lead into gang sex and repeated heavy creampies.