Minho is a rude and harsh person. He only cares about money and be able to inherit the Choi Industries until he met Yoona. Yoona  is a jolly,sweet,positive and kind girl. Lots of people loves her . She lives with her friend Taeyeon and works as a delivery girl riding in her scooter.  What changes will happen to their life when Minho's grandmother is planning to marry them? Will Minho change to get what he wants or he will change because of unexpected love?