I'm not positive, but I'd be shocked if this photo wasn't depicting Luna and Octavia as they discuss Lincoln's death. Luna was a friend of Lincoln's, and Octavia struggling with Lincoln's death has been a big theme for her over the last few episodes. Just look at her sad, distracted expression. They must be discussing Lincoln's demise.
There appears to be some kind of standoff between Luna and Bellamy, as Clarke looks on uneasily from the side. Luna is looking at Bellamy like she might just give up her pacifist inclinations for a second to hit him, while Bellamy's hands are outstretched as if he's trying to entreat Luna to do as they say.
Are the delinquents plotting some way to either convince or force Luna to accept the flame? Here we see Octavia, Bellamy, and Clarke chatting privately around a fire, while among Luna's people. To force Luna to accept the flame would be terrible... but then again, this group has made terrible choices to protect everyone in the past.
Is it just me, or has Clarke gone from looking distressed to looking kind of angry? It would be understandable because Clarke is certainly stressed out. In a relatively short amount of time, she's tragically lost the woman she loved and has been thrust into a crazy journey to find the only person who can save them all -- only to have that person refuse to do it.
Everyone looks uneasy as Clarke speaks to Luna. What is Luna saying to Clarke to cause that distressed look on Clarke's face? Is she just continuing to refuse the post of the Commander? Or something worse?
Everyone is holding cups as if they've been casually partying, but the expressions on the delinquents' faces (eyes all turned to Luna) make it seem like something very bad is about to happen -- or is already happening.
Is Jasper making a run for it? Certainly looks that way, based on his posture. There's also a man holding a crossbow just behind him, so perhaps this gathering isn't as casual and friendly as we initially thought.
Wow! A smile on Jasper's face is a seriously noteworthy and unusual sight, given how depressed and unhappy he's been all season following the traumatic death of Maya during The 100 Season 2 Finale. Despite Luna's refusal to take the flame, something positive must have happened at this Grounder party -- for Jasper, at least.
It looks like Team Delinquents are socializing with Luna's people in some kind of nighttime event. Unfortunately, they don't have their party faces on, so the event likely isn't going as well as they might've hoped.
Luna seems to be a sort of pacifist and doesn't believe that her anti-violence mindset will fit in well with the role of the Commander. Will she change her mind once Clarke explains the situation with ALIE?