The details of this mission have yet to be revealed by any trailers for "A Lie Guarded." So far, we only know that Abby is commanding a quest to "find answers." What answers she's looking for – well, that we don't know just yet.
Are Nyko and Luna sticking around or leaving? Luna is the last of her people, the only one to survive her acute radiation sickness. The bag seems to indicate she's either leaving or setting out on the mission with Abby and the others.
I guess it's true that the end of the world makes for strange "bedfellows" – Murphy is the one who caused Raven's permanent physical disability, the root of so much of her pain. Yet, here they are, standing side by side.
On "The Four Horsemen," Murphy made a point to help Abby out with attempting to save Adria, Luna's little girl. But his act of kindness wasn't purely out of the goodness of his heart. As he told Emori, they need to make sure they're on the inside of Alpha Station when the door closes -- he's trying to ensure their survival at any cost with his machinations.
Over the first few hours of the season, Clarke and Jaha have had several intense and revealing conversations. Now, it appears that they are working closely together to ensure that their people survive the nuclear meltdown.
Now more than ever, Clarke is seeing things from the former Chancellor's perspective. While she just saw him as a ruthless and unfeeling dictator before, she now realizes that he made tough choices to ensure the survival of his people.
Can't these poor kids ever catch a break? Monty and Harper just solidified their relationship but have had no time to enjoy it. Hopefully, both of them manage to survive the oncoming acid rain and radiation fallout.