第 3 季 共 13 集
播出时间：2015年6月13日
第 1 集 The World We Seize
播出时间：2015年6月13日
Nolan and Irisa are mysteriously rescued from their underground confinement just in time to discover that enemy forces are marching on the town of Defiance, which has fallen on hard times following the collapse of the gulanite mines. Meanwhile, Datak, Stahma and Rafe run into deadly complications on their quest to reunite their family; and Alak comes to realize just how unstable her mother-in-law is during their journey through the woods.
第 2 集 The Last Unicorns
播出时间：2015年6月13日
T'evgin comes to Defiance seeking his daughter, who Nolan and Amanda offer to release in exchange for some gulanite; at the same time, Alak and Pilar head off alone to protect the baby; and Datak and Stahma are threatened into helping Gen. Tak's assault.
第 3 集 The Broken Bough
播出时间：2015年6月20日
Amanda negotiates with the Omec, a new alien race, for the future of Defiance; and the Tarrs return to find much changed and their loyalties tested between the humans, the Omec, and the Votanis Collective. Meanwhile, Nolan and Irisa encounter a survivor of Votanis Collective atrocities that can aid their first strike against Gen. Rahm Tak's oncoming army.
第 4 集 Dead Air
播出时间：2015年6月27日
Nolan and Amanda are captured while excavating a buried weapons cache; Berlin investigates a Votanis Collective bombing in the heart of Defiance and sees an opportunity to get revenge on Irisa; Stahma's clandestine relationship with the mysterious Omec leader T'evgin takes a turn.
第 5 集 History Rhymes
播出时间：2015年7月4日
Amanda and Doc Yewll must enlist the Omec for help rescuing Nolan and Irisa, who have fallen into an unexpected and potentially fatal tour of their own past. Meanwhile, Datak and Stahma prepare a decisive move against Gen. Rahm Tak, leader of the Votanis Collective.
第 6 集 Where the Apples Fell
播出时间：2015年7月11日
Nolan and Berlin pursue the Tarrs after their connection to the Votanis Collective is exposed; at the same time, Alak comes to grips with his future as a father.
第 7 集 The Beauty of Our Weapons
播出时间：2015年7月18日
A visiting arms dealer divides Amanda, Nolan, and Berlin. Nolan recruits a militia, but the people need convincing. Datak and Alak have a reckoning. Stahma's presence causes strife.
第 8 集 My Name Is Datak Tarr and I Have Come to Kill You
播出时间：2015年7月25日
Defiance is under siege. As Nolan, Amanda, Irisa and the militia defend the town against the Votanis Collective, Datak recalls his father's chilling lessons and makes a pivotal decision, while Stahma takes an unexpected trip.
第 9 集 Ostinato in White
播出时间：2015年8月1日
A gruesome murder is committed by an unusual beast that's on the loose and being hunted down by Nolan and Irisa, while Doc Yewll delves into the surprising victim. Elsewhere, Amanda resists welcoming back Stahma; and T'evgin learns an unsettling truth about his daughter.
第 10 集 When Twilight Dims the Sky Above
播出时间：2015年8月8日
Amanda decides to ignore Nolan's skepticism and welcome an encouraging Votanis Collective delegation to Defiance. Meanwhile, Stahma's loyalties are tested by an unexpected arrival; and T'evgin takes another step towards acclimating to life on Earth.
第 11 集 Of a Demon in My View
播出时间：2015年8月15日
Nolan is freed from custody; Amanda, Irisa and Berlin try to release Nolan from Kindzi's clutches; Datak regrets seeking help.
第 12 集 The Awakening
播出时间：2015年8月22日
Nolan, Amanda and Irisa search for a way to stop Kindzi from transporting more Omec to Earth; Datak tries to escape from an Omec compound; Stahma asks for forgiveness.
第 13 集 Upon the March We Fittest Die
播出时间：2015年8月29日
Omec hunts Defiance citizens; Nolan, Amanda, and the others undertake a potential suicide mission to end the threat once and for all.
