After a power-hungry dinosaur from outside the valley attacks the king of dinosaurs by surprise, a young T-Rex escapes and begins to train, vowing never to return until he is the biggest and bravest in all the land--and finally strong enough to challenge the evil Fang and restore peace to Green Valley.

Four participants playtest a virtual reality game that is still under development. The game uses AI simulated NPCs and system dynamics to generate a world with features not created by the developers, and perhaps beyond human understanding.