A woman posing as a maid, who is revealed to be a former Special Forces operative, confronts her employer, a billionaire pretending to be paralyzed. She exposes his ability to walk, while he dedoses her violent training and true killer's nature. Both agree to a tense truce: she will keep his secret if he provides access to the house. They form a partnership based on mutual distrust, acknowledging their shared capacity for lethal violence, ending with his warning not to make him regret the deal.