Earth as we know it is gone. A virus has destroyed the planet and rendered all its women infertile, all but one. An elite team of soldiers are tasked with bringing the woman to safety on the newly habitable Earth Two. But when they are forced underground they find themselves fighting for survival from an bloodthirsty creature in a maze of ever shrinking tunnels. As the team's ranks start to dwindle, the tunnels shrink and the ammunition run out, the crawl for survival becomes more and more desperate.

In the remote west coast of Scotland, a drug dealer double-crosses and kills a drug trafficker who imports drugs for him. The dealer is arrested and learns that the murder was witnessed by a couple of anonymous locals. Facing life imprisonment, the dealer decides to hire a hitman to eliminate all the potential witnesses. Outside a rural police station, the hired hitman starts a stopwatch, runs across a road, jumps into his car, and takes off with a screech. He drives full speed through the barren country until he reaches the remote, one street hamlet of Bartoun. He checks his stopwatch. It reads 28 minutes, 36 seconds. He sees a poster advertising a fair in the next village. The residents of Bartoun are advised to meet on main street at noon to get a ride. As the people begin to congregate the next day, the hitman walks toward them and begins shooting. He knows that he has 28 minutes and 36 seconds before the police arrive.

Unemployed Glaswegian thespians Mickey and Joe decide to quit Scotland and make a fresh start for themselves in Los Angeles. But their arrival in the US doesn't bring any change to their fortunes, and after a failed attempt to find acting work in Tinseltown, the unlucky twosome end up in Las Vegas, where they lose all their money at the gaming tables. When they are then approached by a gangster who suggests that they rob a local casino, the hapless Scots think they must be due a change in their fortunes and decide to give it a try.