Dong Sicheng is a high school student who dreams to be a chinese dance major, but needs money for his education. One day, he meets the chairman of Seo Group who offers her the chance to live in his house if he accomplishes the mission of reuniting his three grandsons, under some conditions such as he cannot date anyone among them(not that he would). But, when Taeyong' s childhood friend Ten enters the mix, Sicheng finds himself lost in his emotions.    

Ten, Sicheng, Jaehyun, Haechan and Yuta are Omegas at SOPA Academy. Little did they know it would be filled with a bunch of mate-seeking Alphas; and they were the only five  Omegas on campus.  So, the Academy creates a tournament where students compete to spend time with the Omega's in hopes of becoming their mates. Johnny, Taeyong, Doyoung, Mark, and Hansol decide they want to take part