David "Davy" Patton's once beloved service as a park ranger in deep East Texas has left him dreaming of a real adventure-until he finds out the tall tales he keeps alive aren't so tall at all.

When an ancient Caddo artifact known as the Eternal Flame is uncovered, a deadly Native woman named Rose crashes into his life desperately searching for the lost treasure of a long-dead outlaw. Trailed by conquistador descendant Damian De León and a mysterious gunslinger by his side, Davy joins Rose on a treasure hunt generations in the making.

As their journey challenges the line between life and death, taking them from the hidden depths of the gulf to the bright constellations above, they race to be the first to find the outlaw's treasure. If they can claim it for their own, the fall of a stolen empire and a future few have dared to dream for awaits. But if they fail, the De León dynasty's next conquest will drive the final nail in the coffin of a family betrayed through time.