The year is 2018. A high school student, Kim Bon-sok, hides from those around him the ability to fly. His mother runs a pork chop restaurant and worries a lot when her son starts losing weight, because he hasn’t yet learned to control his spontaneous levitation and is forced to eat a lot and wear weights. When a new girl, Chan-Hi-su, appears in his class, Bon-sok falls in love with her at first sight. The girl changed schools and moved to this neighborhood with her father, who plans to open a cafe and sell fried chicken. Chan-Hi-su also attracts the class president and top student Lee Gan-hun, who is ashamed of his intellectually disabled father. While the students are preparing for their final exams, a killer arrives in Korea and begins hunting people with superpowers, and before killing them he asks whether they have children.