Fifty years from now, our sun is dying. The planet lies frozen. In a last ditch attempt to save our world, humanity pools its resources to send a mission to the sun, in order to deliver a bomb which they hope will reignite our dying star, effectively creating a mini-Big Bang (or small bang, if you will). The eight astronauts and scientists on board are, not surprisingly, a fairly rag-tag band of the type of social inadequates who would be prepared to spend several years in space on what might well be a suicide mission; nonetheless, if they can pull it off, they will, quite literally, be the saviours of the universe.