Soon-to-be heroine Achtli joins her archeologist mother Nantsin on an unsanctioned dig. Inadvertently, they forcefully discharge an ancient energy cell that awakens stone colossi hellbent on destroying the city.

Achtli later discovers that these giants are deities from the old times. The frightening Forgotten Gods.

Achtli crawls out of the rubble to discover two things: her prosthetic arm has been replaced with a mysterious stone artifact, and an ethereal voice in her head is claiming its own divinity. Now, Achtli must face the Forgotten Gods in order to stop them from destroying everything that she loves.