It’s a race against time as Darius must accelerate his plan to stop the asteroid before the Pentagon shuts him down. Also, Grace has to make difficult decisions that could have life or death consequences for millions of people, and Liam and Jillian reunite under surprising circumstances.

Framed for murder, Darius and Grace must try to escape from Russia, and Liam tries to convince Jillian to come back to Tanz.