After throwing a party when her parents were away, 18-year-old Kerry Dowling is discovered lifeless at the bottom of the family pool. The police immediately question Kerry's boyfriend, who -- despite proclaiming his love for her -- was seen arguing with Kerry that night. As neighbors and classmates grieve the loss of their friend, Kerry's 28-year-old sister Aline, a guidance counselor, searches for answers. She'll do anything to help the Detective Mike Wilson learn what really happened the night Kerry was killed.