He used to be a well-known Chinese soldier king, but an accident caused him to retreat into the world. Three years later, he embarked on the journey again, but his identity was an ordinary student. What kind of secret mission did he carry? What kind of secret mission would he start? A wonderful life? The cold and proud princess, the stunning school beauty, the charming woman, the gambling king's daughter, co-existing romance and passion, killing and tenderness coexist!!!