Jun is a top National Intelligence Service agent who is capable of eliminating hundreds of terrorists in one fell swoop. Dissatisfied with his existence, Jun conceals his demise and leaves the NIS to live a regular family life and pursue his dream of being a webtoon artist. His uninteresting webtoons, on the other hand, are ignored by readers and even his wife. Jun, depressed and unhappy with himself, creates a webtoon about his history as a covert spy.