柳美里（庭沼珉 饰）刚跟未婚夫金宇宙解除婚约，却意外中了豪华新婚房！
为了500万新婚豪宅，找来同名的男子金宇宙（崔宇植 饰）假结婚，为期90天的假结婚挑战就此展开。

Eun Chae-ni is the granddaughter of a wealthy restaurant owner. She is smart, polite, and diligent in everything she does, but because she has a different heart from others, she becomes more stubborn as she grows up, and she lives her life on thin ice that may stop at any time, dreaming of a train trip. Lee Woon-jung is a mysterious civil servant with many secrets and no social skills. He is a lonely person who can hardly be by anyone's side, but he comes to realize the meaning of 'us' after meeting Eun Chae-ni.

该剧讲述为了朋友而对抗暴力，但最终没能守护朋友而留下心理创伤的模范生延时恩转学到银章高中后，因为不能再失去朋友而选择与更强大的暴力对抗时发生的悽惨的生存记和灿烂的成长故事。

含冤入狱的朴台仲（池昌旭 饰）被无形黑手摧毁人生，誓要同操控整个阴谋的“游戏主宰”安耀翰（都敬秀 饰）来一场惊心动魄的正面交锋。
该剧翻拍自2017年的韩国电影《被操纵的都市》。