Computer science major Sangwoo Choo values reason, routine, and rules above all, so when the rest of his teammates fail to contribute to the group presentation, he doesn’t hesitate to cut everyone’s names from the project entirely―including design major Jaeyoung Jang, which ruins his plans to graduate and study abroad. Jaeyoung is more than happy to return the favor and strives to be the biggest thorn in Sangwoo’s side―but as they spend more time together, a strange attraction begins to develop between them... Will Sangwoo be able to debug this semantic error from his life?

Computer science major Chu Sangwoo is the epitome of an inflexible and strict rule-abiding person. While working on a liberal arts group project with freeloaders who don’t put in any effort, Sangwoo reasonably decides to remove their names from the final presentation. But he didn’t imagine how involved he would become with the person whose study-abroad plans were messed up because of that project. The involved the campus star who everyone knows, Department of Design’s Jang Jaeyoung. He has everything from skills, looks, family background and good relationships except for 1 big Chu Sangwoo. What happens when an engineer and an artist whose personalities are like oil and water have to work together? Jang Jaeyoung is like a semantic error in the perfect world of Chu Sangwoo. Will Sangwoo be able to debug this?

Sangwoo and Jaeyoung’s feelings come to a head as the two clash over their views on what it means to be in a homosexual relationship! And while the two finally settle on having a purely physical affair to satisfy their needs and curiosity, Sangwoo’s inexperience with romance leads to a rocky start. Will the two be able to keep things casual, or will the emotions bubbling up inside of both of them be too much to bear?

Wenn eine Racheaktion zu unerwarteten Gefühlen führt... Der disziplinierte Informatikstudent Sangwoo ist ein großer Anhänger von Struktur und Regeln. Als seine Teamkollegen bei einer Gruppenpräsentation nicht mitziehen, streicht er kurzerhand ihre Namen aus dem Projekt, was besonders den Designstudenten Jaeyoung hart trifft und seine Abschlusspläne gefährdet. Jaeyoung beschließt, sich an Sangwoo zu rächen und lässt keine Gelegenheit aus, ihm das Leben schwer zu machen. Doch je mehr Zeit die beiden miteinander verbringen, desto mehr entsteht eine unerwartete Anziehungskraft zwischen ihnen. Wird Sangwoo es schaffen, diesen "Fehler" aus seinem geordneten Leben zu entfernen?