"A Nightmare on Elm Street 4: The Dream Master" is a 1988 horror film directed by Renny Harlin. It is the fourth installment in the A Nightmare on Elm Street series, featuring the iconic character Freddy Krueger. The story follows a group of teenagers who are haunted by Freddy, who can invade their dreams and kill them while they sleep. In this film, the protagonist, Alice Johnson, discovers she has the ability to pull others into her dreams. As her friends are killed one by one, Alice must confront Freddy and find a way to stop him. The film combines elements of fantasy and horror, showcasing creative dream sequences and special effects.