Nolan and Irisa arrive in Defiance, where the town is soon divided over the death of Luke McCawley. But a bigger threat forces everyone together: An attack by the Volge.

Rafe & Nolan search underground St. Louis while looking for an escaped convict. Meanwhile, a violent Castithan tradition causes clashes amongst the residents of Defiance.

Kenya is kidnapped. Rafe learns that Luke was involved in some mysterious goings-on at the mines and orders Quentin to get to the bottom of it.

Amanda and Nolan take a transport across the badlands to transport a prisoner and join forces with a band of outlaws. A visitor to Defiance must make Irisa confront her traumatic past.

An old war buddy catches up with Nolan at the same time a Castithan criminal with a history of violence enters the picture.

Interesting relationships develop when the residents of Defiance are forced to stay indoors as a threatening Razor Rain storm approaches. Meanwhile, visions lead Irisa to the Spirit Riders and Sukar, who has fallen under the influence of a strange and mysterious force.

A deadly plague threatens the town; racial tensions rise when the Irathients, who are immune to the virus, are quarantined.

Kenya’s earth-shattering return continues sending shock waves through Defiance as Stahma tries to reconcile Kenya’s reappearance, while Doc Yewll works to keep her own dark secret hidden.