The narcissistic young master Xi Men Yun’s sister, ran away from home, in result, his mother arranged for him to take his sister’s place and marry Bei Tang Xiao, her fiancé. The foolish Xi Men Yun decides to run away as well from the marriage, but fate is an intriguing thing, he ran away only to end up in the same General Bei Tang Xiao’s residence. And because of a small accident where he fell into water, and the general tried to save him, they exchanged bodies! This is how their wonderful fate unfolds.