In the wake of Sebastian’s transformation, the Titans race to retrieve Traigon’s horn, leading them to the quaint – but eerie – town of Caul’s Folly.

Holden and his allies must stop Ashford and his team from destroying the Ring, and perhaps all of humanity.

As survivors arrive to the Behemoth, two factions form over how to handle a life-or-death threat. Holden grapples with what he’s seen and the choices he must make.