In the grim future of our world, Earth has been ravaged by sentient machines, the human race all but exterminated. Only scattered groups of children have survived by hiding in tunnels to escape the murderous robots that still scour the surface. One day, a scavenging party for one such group happens upon a massive humanoid robot bearing the letters SAM on its armour. Caught by surprise, young Ian is about to be vaporised - but the machine doesn't shoot -

A year has passed for the community of survivors. Ian and his team are still making dangerous forays to the ravaged surface in search of food and medicine, forced to go ever further each time. But one day, just as they're about to be killed by one of the exterminator robots that constantly patrol the city, they're saved by an old acquaintance not even Ian still hoped to see again: SAM, the strange robot that seems to want to protect the boy -

Winter blankets the wreckage of the world. In the snow-covered ruins, four children scavenge for supplies to feed their dwindling group of survivors. Four, because Ian is gone - captured or killed by the mechanical death squads that hunt them all. SAM, his robotic guardian angel, has left as well. And without Ian, without his optimism, the survivors are losing hope. Until, one day, they recover the electronic device that their friend had built to communicate with SAM...

In the grim future of our world, Earth has been ravaged by sentient machines, the human race all but exterminated. Only scattered groups of children have survived by hiding in tunnels to escape the murderous robots that still scour the surface. One day, a scavenging party for one such group happens upon a massive humanoid robot bearing the letters SAM on its armour. Caught by surprise, young Ian is about to be vaporised - but the machine doesn't shoot -

A year has passed for the community of survivors. Ian and his team are still making dangerous forays to the ravaged surface in search of food and medicine, forced to go ever further each time. But one day, just as they're about to be killed by one of the exterminator robots that constantly patrol the city, they're saved by an old acquaintance not even Ian still hoped to see again: SAM, the strange robot that seems to want to protect the boy -

Winter blankets the wreckage of the world. In the snow-covered ruins, four children scavenge for supplies to feed their dwindling group of survivors. Four, because Ian is gone - captured or killed by the mechanical death squads that hunt them all. SAM, his robotic guardian angel, has left as well. And without Ian, without his optimism, the survivors are losing hope. Until, one day, they recover the electronic device that their friend had built to communicate with SAM...