In the night city of neon and steel, Luo Chenran was just a humble prosthetic repairman, struggling to make ends meet every day. It wasn't until he was forced to be involved in an assassination plot by a top chaebol that he discovered that his seemingly useless "disguise" talent was actually the city's most deadly weapon. When everyone is looking for the legendary killer codenamed "Ghost", he is using his hands covered with engine oil to repair the broken mechanical arm of the company agents who are chasing him.
