Holy hell. What is it with this show? It's so good!
Okay, so Emori is found out and they vow to experiment on her next. She and John are handcuffed to the rocket and set in isolation. This all happens after the test subject dies and Abby thinks she's figured out why.
However, when it's time for the retest, Abby cannot bring herself to potentially kill another person. She balks at injecting Emori and Clarke claims she'll take over for her. Only to inject herself with the Nightblood. Abby is having none of that and ends up smashing and destroying the radiation machine to ensure that Clarke can't go through with the test.
Meanwhile, back in Arkadia, Jaha somehow figures out that the bunker he, Clarke, and Bellamy went to several episodes ago was a decoy bunker. Eventually they find the real bunker (with Indra and Gaia's help) that might actually be suitable for everyone (assuming we really need a solution in the next 10 days and now Nightblood is off the table).
Jasper sort of convinces Bellamy that if they are gonna die, he should at least have a little fun first. They end up at a party at Arkadia. I guess when the cat's away, the mice will play.