Lee Heeseung is a billionaire who's known for spending money everywhere and his parents are always annoyed by him and you are an ordinary girl who lives in a province.

one day, he had a fight with his parents. his parents was so done and they decided to send him to his grandfather which is your friend because his grandfather cared about you the most because you are his grandfather's closest neighbor in the province.

while he was with his grandfather, he didn't noticed that his wallet fell. and while you we're just enjoying and walking around, you saw a wallet on the middle of the road. you picked it up to see who's the owner, you then ran to your neighbor's house (His grandfather's house) and when you knocked, his grandfather opened the door for you and let you in. while you we're sitting you then talked about the wallet you found and asked him to help you find the owner. but little do you know that the owner of the wallet is his grandson?