Jenny (Daisy Keeping) is a young English woman who travels to Italy to visit her father Dr. Brooks (David Brandon), a former doctor turned amateur archaeologist. Her father is currently participating in a dig at a lake that was previously worshipped by the Etruscans and is surrounded by mystery. Jenny is ultimately unaware that her visit will bring to light several horrible secrets about her father and her past, secrets that could put her very well-being at risk.