Despite his straight-laced, cold, and blunt demeanor, Jung Ji Hoo is still adored by his female co-workers. One day, his co-worker Ji Woo, mistakenly opens a package of Ji Hoo's, accidentally revealing for all the world to see one of his sexual fetishes. Passing it off as owning a pet, in secret, Ji Hoo and Ji Woo arrange a contract, that begins a racy romance and the indulgence of Ji Hoo's fetish for slave/master fantasies.