A boy given abilities to become an adult superhero in times of need enters the DC Cinematic Universe when young Billy Batson finds himself gifted with the power of the wizard Shazam. What this means is the teenager, when he says "shazam!", transforms into a costumed, musclebound hero (Zachary Levi)... but doesn't develop the brain to match.
The latest champion in an age-old battle between good and evil, Billy Batson mostly enjoys goofing off with his new-found powers, despite the urging of his best friend and superhero enthusiast, Freddy. When he's sought out by a villainous physicist (Mark Strong) embodying ancient evils, Batson will need to transform himself into an actual hero, not just someone that looks like one.