Nolan and Irisa are rescued from their underground confinement by a mysterious force, just in time to discover that enemy forces are marching on the town of Defiance. The town itself has fallen on hard times following the collapse of the gulanite mines, leaving it defenseless. Meanwhile... Datak, Stahma and Rafe run into a deadly complications on their quest to reunite their family.

With most of the McCawleys now dead, Pilar, Alak and baby Luke manage to escape. Pilar finds a trailer in the wilderness and promptly kills the occupants. When Alak awakes in the night, Pilar and the baby are nowhere to be found. In Defiance, Doc Yewl tries to mend the newly arrived purple-skinned alien, Kindzi, though she does so reluctantly. She knows them as an early Votan race known as the Omec, vicious creatures known for eating those they conquer. Kindzi's father T'evkin is soon in town and Amanda has a proposition for him: they will return his daughter provided they share the gulanite. Stahma and Dalak Tarr meanwhile have to deal with General Rahm Tak who wants them to be his spies in the city. Written by garykmcd

Joshua and Irisa head out on a reconnaissance patrol to see just how many soldiers General Rahm Tak has under his command, Along the way the run into Pilar and baby Luke. Not surprisingly, Pilar tries to scam them but Nolan isn't so easily taken in. When he realizes that Rahm Tak has the capability to breach their stasis field, he decides to take action. Back in Defiance, Stahma and Datak receive orders from the Rahm Tak. Stahma gets friendly with the Omec, T'evgin. Written by garykmcd

Nolan and Amanda plan escape after they're captured while excavating a buried weapons cache. Meanwhile Berlin sees an opportunity for revenge against Irisa while investigating a Votanis Collective bombing in the heart of Defiance. Stahma's clandestine relationship with T'evgin, the mysterious Omec leader, takes a turn.

Nola and Irisa are both unconscious and now share a dreamlike space where they re-live events from their past. Doc Yewl concludes they are dying and that they now have a shared psychic connection owing to the stasis pod they were in for 7 months. If they are to live, she will have to operate simultaneously on both of them, but to do that she needs access to Omec technology. As for Nolan and Irisa, the memories they now share drives a wedge between them. Meanwhile, Datak is upset with Stahma and the fact that her plan to kill T'evgin failed. She goes to plan B, as does Datak. At General Rahm Tak's camp, Alak makes a break for freedom. Written by garykmcd

Alak returns to Defiance but blames his mother for Christie's death. When they stop him from leaving with the baby, Alak tells Nolan what his parents have been up to, including blowing up the arch. With Stahma and Dalak trying to get out of town, Nolan asks T'evgin for help on fighting the Votanis Collective but gets little sympathy. Meanwhile, Rahm Tak welcomes his wife, Volubela, who tells him he's to return as he's exceeded his orders. He has other ideas. Written by garykmcd

A visiting handsome arms dealer changes Defiance's fortunes, and divides Amanda, Nolan and Berlin. Nolan recruits a militia to fight the oncoming Votanis Collective army, but the people of Defiance need convincing to fight what may be an unwinnable war; Datak and Alak have a reckoning; Stahma's presence causes strife among the mysterious Omec.

Defiance is under siege. Nolan, Amanda, Irisa, and the militia defend the town against a Votanis Collective incursion. Datak, recalling his father's chilling lessons, makes a pivotal decision. Stahma takes an unexpected trip.

Following a gruesome murder, Nolan and Irisa hunt the unusual beast loose in Defiance, and Doc Yewll investigates the surprising victim. Amanda resists welcoming back Stahma and T'evgin learns an unsettling truth about his daughter.

Over Nolan's skepticism, Amanda welcomes an encouraging Votanis Collective delegation to Defiance. Stahma's loyalties are tested by an unexpected arrival and T'evgin takes another step towards acclimating to life on Earth.

After Nolan is unexpectedly freed from Votanis Collective custody, Amanda, Irisa, and Berlin hurry to free him from Kindzi's clutches. Datak regrets seeking Doc Yewll's help against the Omec. Nolan witnesses something startling in the mines.

Nolan, Amanda, and Irisa search for a way to stop invulnerable Kindzi from waking and transporting more Omec to Earth. Datak seeks escape from a deadly Omec compound. Stahma implores Alak for forgiveness before it's too late.

With Omec on the loose, hunting Defiance citizens, Nolan, Amanda, Irisa, Datak, Stahma, Berlin, and Doc Yewll undertake a potential suicide mission to end the Omec threat once and for all.