It is a pre-show theater. That's part of the queue. After that, you entered the 1930's soundstage. That's the entrance to the ride part. In the ride, it takes you from different movie footage and comes to life up close. During the ride, the ride replace the tour guide (for the short time) a gangster (old city) or cowboy (Western). After the Alien scene, it will take you to Raiders of the Lost Ark. Then during that scene, the ride takes you to the priceless jewel. When someone (gangster or cowboy) trying to have it. Smoke comes out and the tour guy is back. Then, the tour guy takes you to the rest of the movies (including my favorite scene: Casablanca). Before end of the tour, there will be a film finale. After that, you are back on the soundstage and exit from there.
Hope that's help!