Li Youfu obeys his master's order to go down the mountain, and reunites with Su Wantang, the president of the Su Group. Facing the encirclement and suppression of the Su family by multiple forces, he relies on true dragon martial arts and various assistance to defuse crises time and again, protecting his fiancée and the innocent ones. In fighting side by side, the two go from strangers to trust, from contract to true heart. In the end, Li Youfu signs a lifelong contract to guard Su Wantang with the identity of chief security officer, welcoming peace and happiness together.