After his boat sank in 1982, Steven Callahan spent 76 days alone on a raft in the Atlantic Ocean. Battling hunger, thirst and circling sharks, he used solar stills to turn seawater into fresh water and a homemade sextant to navigate to the shipping lanes. Surviving on fish, he endured storms, endless sun and isolation. His amazing true story is a powerful tale of courage, focus and the will to survive.