Koo Junhoe is a successful businessman who runs a prestigious company that is owned by his family but achieved by him. He has everything that every human being would want to have. But because of his cold personality, workers don't have the guts to talk to him unless it's an important matter. Kim Jinhwan is an average guy who is trying to make it in life by working his ass off. However, after the company that he has worked for almost 2 years shuts down because of bankruptcy, he ends up finding a job that is far suitable for him. But, because of his need for money to live, he ended up accepting the job that has offered to him by Kim Hanbin. Meanwhile, The robot named Kji3 was developed by Kim Hanbin, Kim Ji-won, Song Yunyheong and his team. The robot was supposed to be tested by Kim Jiwon but ran into it with a coffee in his hand causing the robot's battery to malfunction. As Kim Hanbin remodeled the robot after Jinhwan accepting the job, the team ends up recruiting him to take the place of Kji3. Now that he is replacing the place of the robot named Kji3, what is the outcome of the story?.