Cassandra, a 17-year-old girl, dreams of becoming a therapist for troubled children one day. Her parents' job takes them away from their children, leading to an unexpected adventure.

Cassie's father receives a call for him and his wife to take a trip to Australia, thousands of miles away. They accept the offer but realize they can't leave their seventeen and eight-year-old alone for a week, so they call a sitter.

Little did they know, they hired a dangerous psychopath killer. Will Cassandra and Ben escape the harmful hands of their psychotic sitter? Or has he already set his eyes on the young and pure Cassandra?