Watch out for the alleys. If you take a step, it's a wedding sign!” A girl reincarnated in a world where whatever you do leads to common clichés. I want to focus only on my studies and hit the entrance exam jackpot, but that damn romance cliché won't let me go. Coincidentally, Kang Na-ro, a transfer student from nowhere, who is the male lead, and Seo Ki-tae, a baseball ace who returned from a ruined world 15 years in future, appear. Will Baek Seo-na be able to escape from the cliché that is tightening her.