The motley crew discover a small mining colony on a planet that happens to be the target of big corporations. Discovering their identities brings each one to question who they really are.

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.

Cory and Shawn take the girls out for a fun night, but just as Maya feels closer to Shawn, someone from his past comes back into his life and risks ruining everything.

Dutch and John are in a race against time, and a competing Killjoy, to save D'avin's life and clear their names.

The team head to California in search of a pair of brothers who are about to execute a doomful act.

Vince Vaughn (True Detective (2014)); Jim Gaffigan (The Jim Gaffigan Show (2015)). Also: Ryn Weaver performs; Regis Philbin fills in as guest announcer.