The group comes up with a plan to kill Seb after learning the Dark King's life is tied to a vitality conduit, meaning if they cut down the tree, Seb can be killed and die.
As the one with access, Eliot feels uneasy about killing Seb, so he and Margo swap bodies to have Margo, as Eliot, deliver the killing blow.
Josh and Eliot, as Margo, search for the tree, but Josh refuses to tell Eliot, as Margo, where the tree is unless they talk.
Eliot, as Margo, tells Josh to stop asking Margo to apologize for something she feels guilty about. A defeated Josh then points out the right tree.
After the tree is chopped down, a signal is sent giving the go ahead for Margo, as Eliot, to kill Seb. Things take too long, and Julia stabs the Dark King instead.
The episode ends with Seb resurrecting.
Julia also learns she is pregnant and tells Fen she needs some time to think things through.
Fen tells Julia that's not possible as it's Red Monkey month in Fillory, meaning her pregnancy will be magically sped up.
With the help of Hamish, Alice finds a lead on decoding the piece of paper that belonged to Q.
However, things go awry when a group of conscious fungal spores infects the students at Brakebills and tries to steal the page from Alice.
After Penny becomes infected, Alice learns the page is an instruction manual for the world seed, which, with the right nurturing, can grow into almost anything, even an entire world.
She also learns an evil entity called The Couple is searching for the instruction manual.