Kayla and Tom find themselves at odds when faced with a difficult decision. A problem arises with the Mars Ascent Vehicle (MAV) that may jeopardize the crew’s safety. Aiko hosts a dinner party to celebrate Sadie and Ollie’s wedding anniversary.

Laz attempts to sway an influential reporter who is critical of the Mars program. Aiko and Eitan test a solution to the MAV problem. An incident with Denise forces Tom to reconsider his priorities.

Tom and the Providence crew must make a choice with potentially life-threatening consequences. Matteo wrestles with his past. Tom and Denise must deal with unfinished business.

The members of Providence 2 gear up for their mission on launch day. Laz and Denise must prepare for a new chapter in their lives.