Milan, 2030; where only eight years earlier the independent global spy agency Citadel was wiped out by Manticore, the powerful enemy syndicate that manipulates the world from the shadows. Since then, Diana Cavalieri (who is an undercover Citadel agent) is alone, trapped behind enemy lines as a mole in Manticore. When Diana finally sees a way out and the chance to disappear fore...
工学院的风云人物张宰英(朴栖含 饰)，是个拥有模特儿好身材和脸蛋的视觉设计系大四生，成绩优越的边缘人秋尚宇(朴宰灿 饰)，则是机械科的大三生，逻辑能力绝佳却有点书呆子。个性截然不同的两个人，却阴错阳差一起制作手游，张宰英对于秋尚宇来说，就像是电脑程式中的BUG错误指令，一场甜蜜的校园爱情就此展开。本剧改编自同名人气小说，后制作成网漫、动画，这次推出真人版戏剧，可见其魅力。
