Fan Casting Shazam!

After being abandoned at a fair, Billy constantly searches for his mother. He runs from one foster care to another in search of his mother. He's taken in by a new family of foster kids, and gains a friend in Freddy Freeman who's a superhero fan. His life changes forever when a dying wizard chooses him as his successor and give him powers of seven gods in an adult body, which he can access by uttering the word 'Shazam'. Billy explores his new powers with the help of Freddy and becomes a superhero. He meets his match in another powerful villain Dr Sivana, who wants his powers and unleash the 7 sins upon the world. Billy has to overcome his fear and irresponsibility to defeat Dr Sivana and the 7 Sins.