Park Joong-gil and Lee Jae-Hwa have known each other for centuries, Jae-hwa working for Joong-gil as the second-in-command of the Escort Team. Joong-gil has always respected Jae-hwa, but their relationship has never been more than just coworkers. But what will happen to the two after a series of events draws them closer together? And will Jae-hwa be able to melt Joong-gil's cold heart?