To push porn actress Miharu Usa's sexual potential even further, she is sent to a 24-hour sex camp where the action can begin at any moment—and barely stops at all. She is brought to intense orgasms as soon as she arrives, fucked immediately after stepping out of the bathroom, and awakened by two male performers for a threesome the instant she falls asleep. With her pussy subjected to relentless stimulation, Miharu reaches the hardest, most sustained climaxes of her life.