Uma to gosai to reijô(馬と後妻と令嬢)

Kensaku is a sexually impaired wealthy man who owns a stable. His current wife is Emiko, who became his full-time wife after being his mistress. One day, a former racehorse, Brian Hawk, comes to Kensaku’s stables as a stallion. Emiko feels a sense of intimacy when she learns of the horse’s struggles when it ran in the central race. One day, when Kensaku goes on a business trip, Emiko is subjected to sexual humiliation by her stepdaughter, Yuri, her stablehand, and her maid.