Go Eun Sung lost everything when her father died. Her wicked stepmother made her and her brother leave the house while the stepmother took the insurance money to live in a luxurious new apartment. Suddenly, her autistic brother, Eun Woo, disappears. She meets a grandmother on the street, and due to Eun Sung's kindness towards the grandmother, she finds out that the grandmother is actually the CEO of a big restaurant chain and she is taken in by the kind grandmother. Her grandson on the other hand, absolutely hates Go EunSung.