The story, without the spoilers.
Kim Sung-ryong is a gifted accountant who has spent years cooking the books for gangsters in a small town. He is funny, fast-talking, and very good at finding money that is not supposed to exist. His plan is simple: take a quiet middle-management job at TQ Group, a huge company, and quietly skim enough cash to disappear to a warm country. Instead, he walks into a company rotting from the inside, where executives steal from their own workers and honest employees pay the price. Sung-ryong could look away and take the money. He does not. Using the same tricks he learned from criminals, he starts turning them on the corrupt bosses, one audit at a time. His deputy Yoon Ha-kyung, a principled manager who has fought the system for years, is not sure whether to trust him. Neither is ambitious prosecutor-turned-executive Seo Yul, who has his own reasons for protecting the company. Sharp, silly, and surprisingly angry, this is an office comedy about a crook who accidentally becomes the hero the workers needed.
A little curiosity. A new favourite.
Start with the story, meet the cast, and make room for one more episode.