Mulholland Drive begins with a group of people swing-dancing. A crowd applauds as Betty Elms comes to the forefront of the group. Then, the picture changes to a bedroom where someone is sleeping, and we realize that perhaps this is part of a dream.

In the next scene, we see the taillights of a car as it drives away. Camilla Rhodes rides in the back of the car and tells the driver that he's wrong - they don't usually stop here. He pulls a gun on her and tells her to get out of the car, but before she can, the car is hit by another car and catches fire. Camilla gets out and runs away. She goes to Sunset Boulevard and sneaks into her own house. She quietly falls onto the pillow.

At the scene of the wreck, the police find the gun...