Jung Hee Hyo is a wallflower/nobody in Pledis University. She's smart, nice, cute, nerd, rich, and She used to be in love with the school Prince named Jeon Wonwoo. You read it right "USED" to be in love with him until he broke her heart in a really embarrassing way. So now, she really hated him with a passion and decided to plot a revenge on him and change herself. But what will happen if your going to be married with the guy who broke your heart? Will you die in embarrassment again? Will you hate him more that you hate worms? Will he break your heart again? Will you kill him now for your revenge? Or Will you fall in love with him for the second time around?