After the sudden death of her husband, Kate Turner is looking for a fresh start for herself and her teenage daughter, Alex. They relocate to the beachside town of Shoreham, Florida, where all is not as sunny as it seems.
Although Kate makes fast friends with a trio of fellow moms, their daughters take an instant dislike to Alex, who attempts to document their bullying in her video diary. Kate brushes off Alex's concerns--until she receives a series of chilling warnings about the clique of moms from other parents and neighbors. As it becomes harder for her to ignore the malicious undercurrent she senses among her new friends, Kate grows increasingly unsure of who to believe--and who to trust.
As small-town gossip weaves a harrowing web of jealousy, deceit, and betrayal, Kate and Alex discover that whether you're in or out, the status quo can turn on you deadly fast.