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

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,…

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

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…

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.

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

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.

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.

Amy and Ty help Scott’s nephew realize he is worthy of continuing his family tradition of relay racing.

Madison faces a horrifying revelation.

Strand’s motives are made clear when Nick discovers a new threat descending on the dam.

Alicia encounters a potential ally; Ofelia fights for survival; Nick uses his skill set for profit.

With the Ranchers trapped and without hope, Alicia is thrust into a position of leadership where she’s forced to make life-changing decisions.

Nick and Jake set out to handle a delicate situation; the Ranch prepares for a threat greater than any they’ve faced before.

With the Ranch dangerously low on resources, Madison and Walker leave in search of a solution. Nick and Alicia struggle to keep the peace.

In the aftermath of the Clark family’s actions, new leadership assumes control of the Ranch. Daniel assists Lola in the distribution of water.

Madison must negotiate the terms of an agreement in the midst of ranch-wide turmoil. Nick and Alicia challenge their mother’s motives.

A new arrival sows a divide within the ranch. Meanwhile, Alicia forms a new relationship in the hopes of maintaining peace.

A new threat reveals itself to Madison and Troy as they search for answers. Alicia must reconcile with her past decisions.