College student Eun Ha-Won Bright and lonely, she wants to be a vet. Her family is distant. After her mother's vehicle accident, Eun Ha-Won lives with her father, step-mother, and step-sister. She aids an elderly stranger. He advises she reside in a mansion and become a vet. She now lives with her cousins Kang Ji-Woon, Kang Hyun-Min, Kang Seo-Woo, and bodyguard Lee Yoon-Sung.