Last Action Hero (1993) on Netflix

This is the story of young Danny Madigan who is a huge fan of Jack Slater, a larger-than-life action hero played by Arnold Schwarzenegger. When his best friend, Nick the projectionist, gives him a magic ticket to the newest Jack Slater film, Danny is transported into Slater's world, his number one hero where the good guys always win. It's a dream come true for Danny, but things take a turn for the worst when one of Slater's enemies, Benedict the hitman, gets a hold of the ticket and ends up in Danny's world, where he realizes that if he can kill Arnold Schwarzenegger, then Slater will be no more! Slater and Danny must join forces and travel back and stop him at all costs before it'll be the end of Jack Slater!