Following the shocking events of Terrifier 2, survivor Sienna is plagued by disturbing visions and begins to realise there's no escaping her past, or out-running Art the Clown. Sadistic Art the Clown (David Howard Thornton) is back, and he's more twisted than ever, determined to shatter the peace Sienna and her family have fought so hard to regain - dragging them back into a depraved and insidious living nightmare. With a thirst for chaos and a mind twisted by pure evil, Art unleashes his biggest and bloodiest wave of horror yet, forcing Sienna to face her fears once more, in an epic fight for survival.