On the eve of their high-school graduation, two academic superstars and best friends realize they should have worked less and played more. Determined not to fall short of their peers, the girls try to cram four years of fun into one night.
The discovery of a severed human ear found in a field leads a young man on an investigation related to a beautiful, mysterious nightclub singer and a group of psychopathic criminals who have kidnapped her child.
French dancers gather in a remote, empty school building to rehearse on a wintry night. The all-night celebration morphs into a hallucinatory nightmare when they learn their sangria is laced with LSD.