Jeon Jeongguk is a computer science major working as a pizza delivery boy, and you are an uninspired published author who has just started an art degree. When you realise that the delivery boy is your old high school crush, he keeps coming back, but with more to offer than just puff pastry and vegetarian supreme. Though little did he know that he would end up giving you something much more that flips both of your worlds completely upside down in the form of two blue lines and nine months.