Everyday is usually the same for these school moms, a group of dedicated parents that plan their lives around PTA meetings, soccer practice, and children. For Lily, everything changes when she's egged on by the other moms to innocently flirt with her son's second grade teacher, Grayson. The flirtation quickly turns into a heated affair, one that Lily must keep from her husband and the other moms.
When Lily finally breaks off the affair, strange things begin happening. Her son's homework comes home torn to shreds, Grayson shows up at her house and Lily gets desperate to prove that the beloved teacher has done wrong. As Lily uncovers secrets in Grayson's past, she must stand up for her family as the danger escalates and everyone else turns away.