This Suspenseful tale takes you to a 1950's small town in the Midwest, where a gentle family man, Landy (Michael Biehn), and his wife, Bea (Penelope Ann Miller), fight to release his sister Grace from a state asylum for the insane. Grace (Tatum O' Neal) was sent there after a horrible incident on her wedding day 20 years before left her mentally deranged. Landy brings her home but the local townspeople are distrustful of this damaged woman who alternates between quiet acceptance and wild rants. They soon have bigger problems when a horrific rainstorm threatens to flood the town. In the midst of this natural disaster, Grace experiences a crisis and sets out on a deadly rampage to destroy those who cross her. The unrelenting rain masks the true pathological extremes of an unhinged woman bent on revenge.