Legacyfindstheteamofyoungexplorersouttorevealthesecretsofanarearemovedfrommoderndaymapsandhiddenbehindelectricfences.However,oncetheyreachthecenterofthelake,theydiscoveranislandthatharborsanabandonedfacilitywithahorrificlegacy:theislandishometoadeadlypredatoreagertofeastonthosedumbenoughtoignorethewarnings.Butbeforetheycanturnback,ourhaplessheroesgetdraggedintoabattlefortheirlives--andwillneedtoworktogetheriftheyhopetosurvive.