"My Spy" follows JJ, a hardened CIA operative, who has been demoted and finds himself at the mercy of a precocious 9-year-old girl named Sophie after he is sent undercover to surveil her family. In exchange for not blowing JJs cover, Sophie convinces him to spend time with her and teach her to be a spy. Despite his reluctance, JJ finds he is no match for Sophie's disarming charm and wit.