Sheppard and his team are grounded on an alien planet after their Puddle Jumper is knocked out of the sky by some sort of energy field. They trace the EM disturbance (by its effect on a magnetic compass, since nothing else works) to some ancient ruins, where they are immediately ambushed by a group of children in warpaint. The war band takes them back to their village, where again only children are in evidence. The locals are shocked at the presence of "full-growns" and turn the problem over to the village "elders."