BioShock takes place in 1960 in the middle of the Atlantic Ocean, where Jack, sole survivor of a plane crash, discovers the entrance to the recluse underwater city of Rapture, at the end of a civil war which left most of this utopia in disrepair. Finding himself in an alien world, he has no choice but to fight for his survival against the Splicers, degenerated citizens addicted to the genetic material known as ADAM, and all the traps laid down by the city's visionary founder, Andrew Ryan. His only help lies in Atlas, a revolutionary man seeking to escape safely to the surface with his family.