To stop more Omec from invading Earth, Nolan must lead a small team on a suicide mission to destroy Kindzi's cruiser.
The VC send a representative to Defiance to negotiate a peace with T'evgin. However, complications from Nolan's recent operation complicate matters. Meanwhile, Datak returns from the dead only to discover that T'evgin is in love with Stahma.moreless
Datak and Stahma go on the run when Alak exposes them to keep his son. Meanwhile, the Omec refuse to help Defiance, and Rahm receives a visit from home.
After someone blows up the Arch, Nolan and Amanda travel to an E-Rep weapons cache to replace the weapons destroyed by the Shrill. However, they end up meeting an old friend. Meanwhile, Stahma receives new orders from Rahm: assassinate T'evgin.moreless
Nolan fights to save the planet from the arkbrain's terraspheres under Irisa's control. However, E-Rep--and Amanda--are willing to kill Irisa to stop her rather than risk all on Nolan's plan. Meanwhile, Pilar abducts Christie and Alak, forcing Datak and Stahma to rescue Rafe and go after them.moreless
An Arkfall crash salvage mission led by Nolan leads to danger in the form of an alien race he has never encountered before; at the same time, Stahma makes a shocking power play after she's admonished by church elders for her growing sense of female empowerment; and Irisa begins confessing her deep, dark secrets to Tommy.moreless
A stalker comes after Amanda, raising concerns for both Nolan and Niles.
While Irzu's influence on Irisa grows, Niles makes an arrangement with Yewll and Datak realizes that Stahma doesn't want him to come home.
Irisa is arrested upon her return to Defiance, but Nolan can arrange her release by capturing those responsible for an explosion that nearly killed Mayor Pottinger. Meanwhile, Stahma decides the only way to stay in control of her family's criminal enterprises is by ensuring that Datak stays behind bars.moreless
Nolan's search for Irisa leads him to New Chicago and AngelArc. Meanwhile, back in Defiance, the Earth Republic appoints a charming, calculating, and ambitious man named Niles Pottinger as mayor.
While Defiance citizens cast their votes for mayor, Irisa must decide whether to accept her destiny and Nolan faces his past.
On the eve of the mayoral election, Nolan and Amanda both come under fire when the Lawkeeper is involved in an accident.
A plague strikes down the residents of Defiance. The people blame the Irathients and place them under quarantine, while Nolan and Connor must confront the E-Rep soldiers to get the cure.
Defiance receives a visitor: an astronaut from the year 2013 who has the potential to destroy the town.
Kenya is among several people that are mysteriously abducted. Meanwhile, Rafe tries to determine who gave his dead son the golden device that may have led to the boy's death.