The opening sequence of the film Cube begins with an extreme close-up of a character's eye opening in an unusual position inside a large cube structure. As the character explores the cube, he discovers identical cube rooms connected by doors in the floors and walls. Upon entering a darker cube room, ominous music plays and the character becomes fearful. A loud whooshing sound is then heard, and the character is suddenly killed as his body violently disintegrates and collapses onto the floor. It is revealed that an invisible barrier in the room was the source of the sound and caused his death.