"Why are they even together?" would be the first thought that cometo mind, asChuSangWooandJangJaeYoungaresodifferentineveryconceivableway.Oneisarobot-likeengineeringstudentwhowearsdarkclothesforconvenienceandfollowsastricttimetable. esoffJaeYoung'snamefromtheproject,and thetwobecomeenemies.Thefilmisare-editofaneightpartTVseriesthattoppedtheWATCHAChart,basedonthewebnovelSemanticErrorbyJeoSoo-ri. romanceoftheyoungmen,whohaveuniquecharmsandperfectlooks,astheydointhenovel.