“Something About 1% ” is a romantic comedy depicting what happens to the pair during the fake engagement. Lee Jae In (Ha Suk Jin) possesses a good appearance. He is smart and comes from a wealthy family, but he is also arrogant. His grandfather orders Jae In to enter into a 10 month contract engagement with a female school teacher, Kim Da Hyun (Jun So Min) that he has never met in his life so that he could inherit the asset as written on his grandfather’s will…