The Legacy of Heorot unfolds on the lush, verdant planet of Avalon, where two hundred colonists from Earth have arrived after a century in cold sleep. They seek to establish a permanent colony on this seemingly perfect world, but their presence disrupts Avalon's ecology.

Cadmann Weyland, a professional soldier, warns the settlers of the potential dangers lurking in this prehistoric paradise. His concerns are dismissed until a large, unnaturally fast, and cunning predator begins to stalk the colony, threatening their very existence.

As the colonists struggle to survive, they must learn to kill the beast and reevaluate everything they know about Avalon's ecology. This gripping tale of suspense and adventure challenges the boundaries of imagination and realism in a new world.