Fake Queen Bee, I'm the true Heiress!

On the first day of term at Hwimyeong International High School, a new student tells everyone she is the heir to MK Group. Her name is Seo Si Eun and her mother works as a maid in the Seo house. The real heir is in the same building. Seo Hae In is the only child of Chairman Seo of MK Group, and she transferred in with her background hidden, wanting to be measured by what she can do and to have the sort of school life other girls have. She now has no way of saying who she is that anyone will believe. Si Eun goes to the top of the school's social order. The school treats Hae In as a liar, and she is bullied and talked about. Si Eun keeps adding to the story to make the impersonation hold. Hae In starts working to get her name and her place back.