After his business crashes, a man disappears from his family for 11 years. But when he makes a return as their wealthy landlord, a messy reunion ensues.

Is about two doctors who could not be more different in skills and personalities but end up combining spirits and bodies in a confused possession.

Eun Ha-Won is a college student. She is a bright girl who wants to be a veterinarian, but at home she is lonely. She is isolated from her family members. Eun Ha-Won lives with father, step-mother and step-sister after her mother died in a car accident. One day, she helps a mysterious old man. The old man suggests to her to live in a mansion and pursue her dream of becoming a veterinarian. Since than, she moves into the mansion and lives with three cousins Kang Ji-Woon, Kang Hyun-Min, Kang Seo-Woo and their bodyguard Lee Yoon-Sung.