Maria and William seem to have it all. Two happy children. A beautiful house. A thriving business. But when their home is invaded by David, an ex-employee with a score to settle, the couple face a terrifying fight to survive. During the course of one hellish night, David picks apart their carefully constructed life. Secrets are unearthed, truths revealed. And soon David begins to wonder if he's bitten off more than he can chew - because he's discovering Maria and William are not the defenseless couple he imagined. By the time he realises who these people really are, it may already be too late... Who will make it out alive?