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.

Michael finds his soul self transported to Mallory, where he is forced to play for his soul against the mysterious Prophet. Meanwhile, Alex and Gates join forces to prevent the meltdown of Vega's nuclear reactor, and David tries to convince William to leave the city before it's too late.