Everyone bands together to stop the harmonic convergence.
Zelda suggests the group consult lunar fanatics, or luna-tics.
Alice and Julia visit one in a mental hospital who tells them to move the moon, they need to ask her, something that can only be done if they have moonbrain, which means can only be achieved by staying awake for five straight days without magic.
They also need a moonrock as a "sacrifice," and find that billionaire Oren Westbrook, also a luna-tic, has one. They ask to borrow it, but he refuses.
The group decides to steal it, but they would need to help of Natasha, Mayakovsky's daughter and Westbrook's ex-girlfriend.
Natasha demands a shade for payment, so the group comes up with a work around.
Margo, Josh, and Penny crash Westbrook's party while Kady, glamoured as Natasha, appears to steal the moonrock.
Julia, Alice, and Eliot stay behind and try to move the moon.
However, their plans are foiled when Marina shows up. She and Eliot both cast spells once the harmonic convergence is upon them and end up "breaking" the moon.
Elsewhere, Kady partners with Zelda to locate the stolen book depository. They find it and the book they need to remove Reed's Mark from hedge witches.
Kady also learns Marina stole the book depository in the first place.
Fen stays in Fillory and tries to get intel on the Dark King's involvement with the capturing of fairies. She meets the captured fairy and goes with the fairy to learn more.
Lastly, Eliot thinks the Monster is still inside him as he hears a voice whispering to him and there appears to be 'Let me out' written in blood.