SAM - Volume 1 - After Man

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…