In the year 1960, a plane crashes in the middle of the Atlantic Ocean with a man named Jack as the only survivor. He has the apparent luck of resurfacing in front of what looks like a door to an underwater complex. Without hesitating, Jack enters the door and is greeted by slogans that praise the city of Rapture, a paradise of free will built in the 1940s by a business magnate named Andrew Ryan. However, even before he assimilates all this new information, the descent to this supposed paradise ends and he can only see ruins and chaos. Learning about the destiny of Rapture will be now Jack's main motivation while he tries to survive the horrors that free can create.