Mona is a pop star diva with a naughty secret - she wants to be a pony girl so badly she can taste it. So far, she has only indulged her kink by writing and performing thinly-veiled songs about her favorite fetish. But since she is already fabulously wealthy, it is becoming increasingly difficult to justify denying herself what she desires most, just to make even more money. So, she tells her manager to shut down the tours and the recording sessions and then takes a year off, during which time she anonymously enrolls in an exclusive pony girl training program and lives out her dream. Big surprise, she becomes the star pony of her class!