A love story about Princess Nak-rang who fell in love with a spy from Goguryeo. She tore the drums of her country so that Goguryeo could attack her country, Nangnang-guk, without warning. However, Nak-rang's love story with Hodong is further complicated due to the fact that Nak-rang's older sister Ja Myung is in love with Hodong as well.

Seung Hee, after losing his girlfriend in a tragic accident, left for 3 years. When he came back, he sought to make a film in a rural area. Someone caught his eye – Bok Shil, who looks exactly like his deceased girlfriend, Hye Soo. Seung Hee followed Bok Shil in order to get some answers, and ended up falling for her. Still the questions remain, is he attracted to Bok Shil because of the memories of his ex-girlfriend, or does he like Bok Shil for who she is? What happens when competitors come into the picture and families opposing their love?

Romania, 2005. One of the last vampire families on earth decides to disguise themselves and live among humans until "the glory of their empire" revives. They are sent to different places all over the world that are considered safe by their leader.

However, a group of vampires takes the wrong ship and happens to come to Korea. On board, they run into a timid and unlucky man Doo-il. One of the vampires bites him by mistake and he becomes one of them. They promise Doo-il that they will return him into a human on the day when their leader comes to find them. He doesn't have any other choice but to live with them. They are disguised as a family of five and start new lives in Seoul. Can they really go back to their country safely when their leader comes to find them?

While watching the vampires who disguise themselves as a human family, the viewers will witness both their human sides and the humans' inhuman sides. Can Seoul be a safe place for them?