When Erin MacKenna's high school canoe float is disrupted by an earthquake separating her group from the main party, she and a younger teen stumble on men burying a murder victim, are kidnapped and held prisoner by known human traffickers, drug dealers and racketeers. Her father, architect Patrick MacKenna, must neglect his earthquake-stricken clients and drop everything to rescue her. He fears Erin, under constant guard and the threat of exploitation...