Jang Jae-young (Park Seo-han), a popular figure in the College of Engineering, is a senior student majoring in visual design with a good figure and face like a model. Choo Sang-woo (Park Jae-chan), a marginal figure with excellent grades, is a junior majoring in mechanical engineering. He has excellent logical ability but is a bit of a nerd. The two people with completely different personalities, by chance, work together to make a mobile game. Jang Jae-young is like a bug in a computer program to Choo Sang-woo, and a sweet campus love begins. This drama is adapted from the popular novel of the same name, which was later made into a webtoon and animation. This time, a live-action drama is launched, which shows its charm.