"The basics!" Guy shouted. "Hit it with the basics!"

He didn't use a spear. He didn't use fire. He picked up a heavy, round rock—the first idea, the original idea. And with a grunt that was pure, unfiltered Grug, he threw it.

The sun hadn't even fully cleared the horizon when Eep bolted upright, a jolt of pure, prehistoric panic shooting through her spine. "Guy! Guy, wake up! It’s gone!"