Seo Hae In, MK Group heiress who decides to conceal her true identity when she transfers to a public school. Tired of being known only for her family's wealth, Hae In hopes to make genuine friends and experience a normal teenage life. However, her plans are thrown into chaos when Seo Si Eun, the daughter of the Hae In family's maid, arrives at school posing as the MK Group heiress. Si Eun quickly rises to the top of the social hierarchy, while Hae In finds herself at the bottom, subjected to bullying and ridicule.
