Chyna Greer was sixteen when her best friend, Zoey, disappeared: one evening Zoey snuck out to the lake to meet her secret crush, and was swallowed up forever into the warm summer night.

Chyna has recently returned to her hometown to bury her mother, and is confronted with memories of Zoey at every turn. As Chyna delves into the town's past, she learns that two other teenagers also went missing. Soon Chyna's search for answers becomes a desperate race to uncover a chilling secret that strikes at the heart of everything she holds dear, and reveal the remorseless evil that has been hiding in plain sight.