Willow Marsh seems like a sleepy town… But something dark lurks in the water.
Town legend says that hundreds of years ago all the children of Willow Marsh drowned in Birch Lake to feed a hungry Demon. When the lake boils, fireflies travel in massive herds, a giant creature roams the city, and children start to go missing, teenage Tessa and her friends believe the demon is back.
She holds the keys to stopping it. The problem is, there’s only one way to reach The Gray, the demon’s world beneath the lake.
Drown in the depths of its waters.