Where mythical creatures fight for the key to open the gate that connected human to mythical creatures. Hayoung-a vampire who has cold personality but good on the inside will do anything to protect the key. Naeun-is a human that yet to discover what she is. Eunji-is a werewolf hayoung best bud that bound to help her in the journey. Chorong-is hayoung's mentor guiding and helping her in every situation Bomi-is a wiccan a trustful comrade of hayoung