A car accident occurred on Mulholland Road late at night, and the woman Rita (Laura Harring) lost her memory in the car accident. She stumbled to an apartment to hide. A man said that he often dreamed of a place called Yunqi, where a demon was staring at him. So he came to Yunqi, and indeed saw a monster behind the wall, and the man fainted on the spot. Another killer killed the man in front of him, but his clumsy behavior caused a lot of troubles. The story goes back to a woman Betty (Naomi Watts) who just came to Hollywood to "dream". Her uncle and aunt have a wide range of connections in the film industry, which makes Betty's development even more powerful, and her audition is well received. At the same time, the apartment where she lives happens to be Rita's hiding place. Betty took Rita in, and the two had a harmonious relationship. Faced with Rita who couldn't remember who she was, Betty decided to help her find her memory. A director wanted to decide the heroine of the new play by himself, but was forced to arrange the candidate by others. He was not satisfied with his work and found out that his wife was sleeping with the cleaner. These seemingly loose events, like a maze, led to an unpredictable world...