Just being back from studying abroad, Patyuth, a very rich guy, went to visit a land, belonging to his family, where was a slum to hundred of people. When his friends and he were driving there, their car almost hit Miew, a slum girl. She looked so innocent and untidy, with her dark skin, curly hair and her social manner. Patyuth's friends looked down on her by comparing them as high-show people and Miew as a slum girl.
Though being looked down by Patyuth's friends, Miew decided to help them when their car run out of petrol on the way. Patyuth, since then, felt grateful and sorry about her life.
Patyuth had the chance to help her when her grandma felt very ill in the hospital and she and her family didn't have money to pay for the hospital. Then she was accepted to work in Patyuth's house as a housemaid. Though being a housemaid, she was really liked by Patyuth's grandma.
Things didn't end up. Patyuth's friends didn't want to see Miew and still tried to get rid of her. However Patyuth was on Miew's side. He said he wanted to change Miew's life. So Patyuth and his friend put a bet, B 500, if Patyuth could really change her into a high-show person.
(Source: AsianFuse Wiki)