From the start of his college years, Hajoon has been smitten with Eun-woo, yet never dared to make a move. Fortunately, this semester they have a class with the esteemed Professor Seo Joohyuk. Sometime later, when Hajoon realizes he left his assignments behind in class, he heads back to grab them. Unexpectedly, he stumbles upon a clandestine tutorial session between Joo-hyuk and Eun-woo that ignites his own brazen aspirations.