A new girl has mysterious transferred to the most popluar high school in Seoul that's only for rich kids but there's a catch to why she transferred that school. She only only three months to find a group of boys that are willing to be her mate. That's the only she can live due to the pressure that her father is putting on her and the only condition is that they must become a hybrid like her. The only one question remains will they chose her or chose continue leading their lives.