“Many Happy Returns” is episode four of season two of The 100.
Even though Clarke had freed Anya from captivity, blood draining and eventual death at the hand of the Reapers, at Mount Weather in “Reapercussions”, Anya still bears a grudge about the number of Grounders Clarke has caused the death of. Admittedly, this is quite a few. So Anya has taken her prisoner and is carting her off to the rest of the Grounders. The trip does not go smoothly, and the forces of Mount Weather are following them.
Finn is proving to have a really ruthless streak as he, Bellamy and Murphy lead the hunt for their missing friends. Of course, they are looking in the wrong place, as they interrogated the captured Grounder until he told them what they wanted to hear, and not the truth. It also looks like not killing Murphy in “Murphy’s Law” will be beneficial in the long run – despite the short term problems.
Jaha makes an appearance for the first time since “Inclement Weather”. His missile appears to have crashed in a, possibly radioactive, wasteland.