Maribel Daniels is weeks away from escaping her hometown, but vanishes while walking home from work. The same night, a truck overturns on a bridge, spilling chemicals into the lake and turning the water red.Her sister, Anya, returns years later to find out what happened to Maribel, but every truth she uncovers reveals another lie. When she finally solves the mystery of her sister's disappearance, Anya realizes she's the only one who can put an end to the Blood Lake Monster.Is she willing to sacrifice everything for the town that ruined her life?