Alex and Noma head to New Delphi after an attack; Claire begins to understand her responsibilities.

With Gabriel in pursuit, Alex and Noma search for an ally; Claire befriends her assassin.

Alex wants to prove himself to the new ally; Claire asks for help from an old friend.

Alex, Noma and Riesen uncover the truth behind Julian's origin; David attempts an alliance.

Alex spearheads a plan to intercept Michael and Gabriel, who have breached the walls of New Delphi in pursuit of their mutual target; Claire begins the negotiation process with the revolting V1s; at the same time, David attempts to restore his legacy by any means necessary.

Alex attempts a dangerous eviction in an effort to save Vega from an impending attack; at the same time, Michael plots their escape from New Delphi; and Claire desperately navigates the fallout of Civil War as Gates travels behind enemy lines to kill a broadcast that threatens peace in the city. Elsewhere, David procures his role in the rebellion following correspondence with an unexpected ally.

Alex finds unexpected shelter to nurse a wounded Noma, with the New Delphi army hot on their trail; at the same time, Michael and Gabriel attempt to escape their mutual captivity while revisiting a past that haunts them both; and Claire calls for a dangerous parlay as David puts a plan in motion to secure his legacy in Vega.

Alex, Noma and Michael near Vega; at the same time, Julian presses Riesen for the location of the amphora by dredging up his past. Meanwhile, a military standoff ends in disaster, forcing Claire to make a harrowing decision; and an unexpected face wanders the city streets claiming to be the Chosen One.

Alex, Noma and Michael hit an unexpected road block; Claire’s judgment call threatens the security of Vega; Julian changes tactics; Arika and Gates wrestle with the cost of survival.

Michael faces the repercussions of his time in Mallory; Alex and Gates try to save Vega from destroying itself; David comes to terms with his past; Gabriel unleashes an unspeakable evil.

The Darkness overtakes the citizens of Vega; William wrestles with the truth about his time in the desert; Arika becomes the victim of her own manipulations; Michael grows concerned about Noma; Alex searches for the Amphora.

With Vega smoldering, Michael squares off with Gabriel; Noma’s past is explored; Arika contemplates her escape; William makes a decision that seals Vega’s fate; Alex tries to save everyone.