The Kung Fu Bodyguard from Nowhere

Miles Lang is looking for his senior sisters. They went missing while he was shut away on the mountain, and he has no idea where they went. His master sent him down to find them. He comes across Sylvia Thorne in danger and pulls her out of it. She runs a company that someone is trying to take over by force. He takes work as her bodyguard. They start as strangers. He handles the pressure coming at her from outside while she holds the company together, and the two of them come to rely on each other. The schemes against her turn out to run deeper than they looked, and in the middle of that his real identity and the duty attached to it come out, and the trail of his sisters gets harder to follow.