As a legendary figure, Su Nan had always stood at the pinnacle of the intelligence world, beyond anyone else's reach. Yet deep down, he had grown tired of a life steeped in blood and gunpowder, and chose to return to the bustling city for an ordinary life. He never expected his mentor's daughter to come looking for him. She was not only his junior fellow apprentice, but also a breathtaking beauty. Hoping to build a warm family as soon as possible, Su Nan had no choice but to put his carefree plans aside and quietly work hard in the city.