Killer Deo-gi and organizational director Park Bakdira, who are immersed in a cruel and cold world of darkness. But after work, the killer becomes an innocent man who only knows nothing but love? Deo-gi, who runs like a large dog to hit his lips consistently, and Park Bak-di, who gets angry but is always down on him. Then one day, the next president of the organization secretly contacted them... and they each take new actions for success and love.