Vox Machina explores an ancient temple to search for their first Vestige of Divergence, a legendary weapon they hope will aid them against the dragons of the Chroma Conclave. As they overcome a series of dangerous encounters to reach the sunken tomb, one of the team makes a terrible mistake.

In the Fey Realm, Vox Machina unexpectedly discovers the city of Syngorn and meets Vax and Vex's father. After the emotional encounter, Vox Machina journeys deeper into the Fey Realm, searching for the next Vestige of Divergence – the Fenthras Bow. To acquire it, they must confront an ancient and powerful archfey. Meanwhile back in Tal'dorei, Scanlan and Pike attempt to nurse Grog back to health.

After a devastating loss, Vox Machina must take the fight to Thordak with one less memeber. They travel across Exandria recruiting allies to face down the Cinder King in his lair. Will the gathered might of the world be enough? Or will Thordak turn Tal'Dorei to ash?

Thordak strikes back! The combined armies of Whitestone and Syngorn are in trouble as the dragon's ambush is sprung. Betrayed by Raishan and left with nowhere to run, Vox Machina scrambles to find a new plan before their allies are wiped out.