Alice heads to her mom's house to do a collaborative spell. She's got some new magic sensors in her house, care of The Library. And while she agrees to work the spell with Alice, it doesn't go so well.
Quentin and Julia find the East River Dragon's herald, Harold. He's pretty busy. Turns out an elixir's been stolen, and if they can find it the Dragon will give them anything they want. OK, they've got this!
Alice and her mom continue to fail at their spell casting, and mom's old friend, Carol, shows up. She and Alice don't have a great history together. And then some Librarians are knocking at the door. Alice reacts by triggering security features that shut down the house -- and trap them inside.
Fen and Margo chase down Fen's prophetic dreamcaster, and arrive at the house of a woman who says she will share her prophecy … as soon as they do a lot of yardwork. King Margo gets pretty peeved and traps her in the vines, only for the woman to confess that she isn't actually the woman from Fen's dreams. Fen can trap her tormentor only in dreams, and the creature is actually named The Napster. Yep.
Q is really going overboard caring for pregnant Poppy. Julia, Kady and Penny are watching this and figure out that something else must be going on. Turns out, some Dragon-y spells are causing Quentin to be very paternal. Some research leads them to believe that Poppy may not be Dragon pregnant, as she claims, and they find a Dragon egg. Penny falls under its spell, but Julia is able to grab it and make a dash with Kady.
The Librarians release screamers into Alice's mom's house. When Alice accuses her mom of calling the Librarians there to nab her, her mom admits that she actually called them on her friend Carol. Awkward. Alice and her mom argue, then reconcile and are able to successfully work the spell. Carol uses magic to distract the Librarians and she leaves the house, followed soon after by Alice.
Julia and Kady head to the Dragon with the egg. They are met there by Penny, Quentin and Poppy who -- of course -- beat them there. They want the egg back, but Julia offers it to the Dragon. At first she is hesitant, but she ultimately accepts it.
Back in Fogg's office, Alice arrives with the beacon spell to complete her deal to help Zelda. Zelda had agreed to free her friend Sheila in return for the spell. But it turns out that Sheila does not want to be free. She is happy to share that she has joined the Order and is now a Librarian. Alice reluctantly hands over the spell. The only good news: Sheila's book will be out of circulation and any inconsistencies will be kept secret.
Egg-hungover Penny, Quentin and Poppy recover in the Best Apartment Ever. Poppy has come to terms with her pregnancy and is excited to be a mom. And, good news, Quentin is not the daddy. He is visibly relieved.