Tensions on Earth and Mars come to a head.

The Professor, Benjamin and the others attempt to free Lisboa. Tokyo’s anger threatens her faith in the plan. Sierra takes matters into her own hands.

With Nairobi held hostage, Gandía negotiates with the crew. The Professor desperately seeks a new plan to save his team.

The group reels following the attack on one of their own. The Professor puts his adjusted plan in motion with the help of new recruits and Palermo.

Bob Lee plans his next moves; and Isaac ties up loose ends. In other events, Nadine investigates the Ukrainian connection.

Bob Lee locates the bullet from the assassination, which leads him to a radical militia group and Isaac; and Nadine is locked in a deadly game of cat and mouse…