Do Hoon, a lonely office worker, begins sharing meals with his neighbor Yoon Soo, who once ran away from his feelings. As their connection deepens, so do their emotions.
When Ho-jun receives an ultimatum to move out and become a successful team leader, he must rent from feisty Jae-yoon, who owns a villa. But when a twist of fate transfers Jae-yoon to Ho-jun's team, he becomes his unwilling employee.
Having spent the past five hundred years wandering through history as an immortal vampire, Kim Jun Ho now finds himself tired of his endless existence. Having lived more lifetimes than anyone ever should, Jun Ho knows that the only way to end his miserable life is to drink the blood of a pure-blooded human and thus become human himself. But finding a pure-blood isn’t nearly as easy as one might think.
Jun Ho is a vampire who is about to die. To survive, he will need to drink pure blood and thus become a human. One day, while searching for this pureblood, he meets Min Hyun, a human with pure blood. But another vampire named Hae Soo, who knows about Jun Ho's past traumas, causes Min Hyun and Jun Ho to fall out.
Tells the romance story of a girl named Hye Ri. She goes to Gangwon Province on a graduation trip with her friends. There she meets a mysterious man Woo Hyuk who runs a guest house. She gets attracted and closer to him and decides to name him “the mermaid prince”.
Yoon Seo Bin is a South Korean singer and actor under Sublime Artist Agency. He was a Korean pop trainee for one year and seven months under JYP Entertainment prior to his appearance as a contestant on the boy group survival reality show Produce X 101.