Game starts on 1st of January 2191. You are an inhabitant of the underground vault - Vault 32. Every thing goes ok until now. Few days ago the central computer informs the vault overseer that time has come and the vault door will now open. Residents of vault were now obliged to leave it. But Overseer doesn't tell anybody about that (except of a few trustworthy) and from time to time he sends out a scouts: "volunteers" randomly chosen by a computer. They were supposed to find a save place where they could deploy the G.E.C.K. and start settlement. Unfortunately no one of those "volunteers" returns. And even worse: you are the next one.