After an epic all-night beach party following their graduation, a group of twenty-somethings wake up on a secluded beach. Under the beating sun and through the fog of their hangovers, they realize that somehow the sand under their feet is alive - and ready to devour anything with a heartbeat that touches it. As the death toll keeps rising, they desperately search for a way to escape the killer beach and the unseen entity waiting for their slightest wrong move.