Lu Xiaobai, who wanted to be a low-key and free boy in the market, accidentally offended the female head constable Shen Junye who hated evil. Lu Xiaobai had no choice but to sign a "sell-indenture" and marry into the Shen family. The two went from being hostile at first to understanding and appreciating each other, and then joined forces to capture the bandits, solve the unsolved case and harvest a beautiful love.