Shin Min-jin is a 29-year-old office worker trapped in a dead-end job under a tyrannical boss. His days are a monotonous cycle of overtime, humiliation, and exhaustion. Until one night, on the subway, a mysterious old man gives him a strange card with a single URL: howtoseeghosts.com What Min-jin discovers there shatters his reality. The shadow he saw behind his boss's chair wasn't his imagination. It was real. An E-rank spirit feeding on workplace resentment. And his boss is possessed. Now, with a newly awakened Exorcist System, Min-jin must learn to see the invisible, hunt the spirits that haunt the living, and maybe — just maybe — find a purpose beyond the 9-to-5 grind. An office horror fantasy about the man who sees what others can't.