Fan Casting Last Action Hero 2 (2020's)

A teenage boy attends the premiere of a reboot of the Jack Slater franchise, starring Dwayne Johnson, being a fan of the original movies, and they're star, Arnold Schwarzenegger, the boy, named Timmy Madigan, dislikes it, and watches the originals, but he is suddenly transported to them, like his father was over 30 years ago, and meets the original Jack Slater, now he, Slater, and others, have to save the world from Warwick from the fifth film, as well other movie villains and monsters from the Jack Slater movies.