Computer science major Chu Sang Woo 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, Sang Woo 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 person: the campus star who everyone knows, Department of Design's Jang Jae Young. He has everything from skills, looks, family background and good relationships except for 1 big problem: Chu Sang Woo. What happens when an engineer and an artist whose personalities are like oil and water have to work together? Jang Jae Young is like a semantic error in the perfect world of Chu Sang Woo. Will Sang Woo be able to debug this?
Jae Young is determined to meet Sang Woo after Sang Woo exposes him as a "free-rider" who did not complete his coursework. While difficult to track down, Jae Young finds an opportunity to meet Sang Woo after receiving a tip about a mobile gamer designer opportunity.
Jaeyoung begins to follow Sangwoo everywhere, including enrolling in the same classes and even moving into the next door residence.
Jaeyoung defends Sangwoo after an argument breaks out at a bar.
Jaeyoung and Sangwoo continue to work closely together daily as they prepare to present their group project to their class.
As Jaeyoung and Sangwoo get closer, Sangwoo begins to panic as he tries to understand his feelings.
Sangwoo pleads with Jaeyoung to continue working with him on the game design.
Jaeyoung proposes a two-week trial for dating each other.
Jaeyoung receives an offer to work in France, but will he accept the offer or continue working with Sangwoo?
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