Vox Machina finds Whitestone's holy leader, Keeper Yennen, who tells them of a growing rebellion. The team realizes that to defeat the Briarwoods they will need the help of rebel leader, Archibald Desnay. But first they must stage a daring prison break and confront the Briarwoods’ sadistic jailer, Kerrion Stonefell.

The Briarwoods' evil past connects with the present as Delilah reveals her pact with the Whispered One. In the bloody Whitestone streets, Vox Machina wages the fight of their lives against an undead horde. But just when all looks lost, the team gets help from an unexpected source.

After Percy confronts his old nemesis, Dr. Anna Ripley, a tenuous partnership is struck. Despite Percy’s protests that she can’t be trusted, Vox Machina brings Ripley along. She leads them through the traps under the castle, but soon the team is double-crossed by one of their own.

Vox Machina has stopped the Briarwoods’ evil ritual, but at a heavy cost. As they flee the Ziggurat to save one of their own, Percy is eager to take revenge on their prisoner, Delilah Briarwood. When Vex implores him to let go of his vengeance, Percy must confront the darkness within himself.

Vox Machina's victorious return home to Emon is cut short by the arrival of ancient dragons, the Chroma Conclave. Despite Vox Machina's best efforts, the dragons lay waste to the city, forcing the team to find a way to escape.

Despite his weakened state, Grog confronts his uncle, Kevdak, in a fight to the death. The battle is intense, with Grog taking a beating at the hands of his uncle’s Titanstone Knuckles, another Vestige of Divergence. As Grog is about to fall, the rest of Vox Machina arrives, just in time to join the fray.

As the black dragon Umbrasyl escapes their attempted ambush, Vox Machina pursues him to Gatshadow Mountain. In the fearsome acid-filled tunnels of Umbrasyl’s lair, Vox Machina must make a final stand against the evil dragon.