US Marshal Teddy Daniels has come to Shutter Island, home of Ashecliffe Hospital for the Criminally Insane. Along with his partner Chuck Aule, he sets out to find an escaped patient, a murderess name Rachel Solando, as a hurricane bears down upon them. But they find out that disappearing patients isn't the only secret the island hides. They fear that someone doesn't want them to leave Shutter Island.