Flash and Elongated Man team up to fight one of the Thinker's metas, a Sioux Indian woman calling herself Black Bison that is hunting down the three pieces of an artifact. Meanwhile, Harry calls together three of his counterparts to form the "Council of Wells" and figure out who DeVoe is.

While Flash, Arrow, White Canary, Firestorm, and Alex attempt to return to Earth-1, Felicity and Iris team up to free Kara before Eobard and Fuehrer Queen remove her heart and transplant it into Overgirl.