Under orders from his police chief, Detective Yoo Jihan infiltrates the powerful Hwa Ryeon Seung syndicate. Unfortunately, he gets found out by Han Dokyung, the organization's second-in-command, who offers to keep Jihan's identity a secret if he becomes Dokyung's dog. Amidst the ensuing humiliation, Jihan begins to feel inexplicably drawn toward Dokyung...