The title sequence of the film "The Butterfly Effect" begins with the quote "Change one thing, change everything" fading in over a black screen with slow background music. Blue and white flashing lights then appear under a water-like visual effect, possibly representing police cars. More titles then appear in the same flowing water style. Later, a bright light under the water possibly represents a medical setting like a doctor's office. The flashing lights then take the shape of a beating butterfly's wings, linking to the film's title. As the music increases in speed and intensity, the butterfly's wings beat faster and closer to the screen, leaving the viewer with an unsettling atmosphere.