Cobweb, Moth, Mustard Seed and Peaseblossom: four tiny fairies who are Bertie's friends
Nate: a pirate from the Little Mermaid
Ariel: an air spirit from The Tempest
Ophelia: from Hamlet whose always on the edge of sanity, some days out of it and others she is normal and can remember things/focus
The characters as they relate to Bertie:
The setting is the Theatre Illuminata which houses "the book" with every play ever written and performed. All the characters are real people (the players) who come and go between the theater and some unnamed place. Bertie and her four fairy friends tend to cause mischief. Bertie remembers befriending Ariel as a child but as she grew older she was forbidden from playing with him. Since Ariel obeyed the order, she still holds a grudge against him and acts angry with him most of the time (we find out she still secretly like him even if she doesn't want to admit it to herself). She is now friends with Nate (even though she really likes him) and summons him when she can (players either have the ability to come to the theater of their own free will or are summoned when a request is pinned to the call board). The Wardrobe Mistress Mrs. Edith is Bertie's maternal figure and looks out for her. The Properties Manager Mr. Hastings is a nice older man who's department Bertie loves to hang out in. It houses infinite rows of every prop from every play (they are real though, for example: a basket of asps for the Egypt set has real asps in it). The Scenic Manager Mr. Tibbs is a gruff man who gets irritated with Bertie when she makes messes or repaints her bedroom (which is just dropped in scenery with a fake wardrobe on stage - "we touch up the scenery but we do not change it!"). The Stage Manager dislikes Bertie intensely and the feeling is mutual (he's happy to see Bertie kicked out). The Theater Manager tolerates her and is stern but patient when he has to interact with her.
What happens now - a long story: Bertie has been working on writing her own play about how she came to the theater. Apparently, the play isn't just imagination but her memory coming back to her. The Theater Manager sees this as a threat and announces in front of all the players that she must leave. After the shock ripples through everyone, Bertie is able to convince him to give her the chance to stay if she can find an invaluable way to contribute. She decides to become a director (the theater doesn't have one) and to be invaluable she decides to redo Hamlet by setting it in ancient Egypt. While she's running around trying to get everyone on board, Ariel is trying to stop her and convince her to leave because she has a chance to be free and he wants her to free him too. Nate doesn't trust Ariel and wants Bertie to be safe so he gets a scrimshaw which is an amulet made of a piece of the real Sea Goddess' finger bone (not the player who acts as the Sea Goddess on stage), it reveals the truths hidden beneath the surface of people. But he warns her that letting salt water touch it would summon the Sea Goddess and that is not good.
Ophelia warns Bertie (while she is in a Turkish bathhouse on stage with Nate & the 4 fairies) to beware of Ariel because he would do anything to be free. When Bertie says it is impossible for a player to leave the theater, Ophelia reveals that she once left the theater for a while by tearing her entry page out of the book. Bertie steals the book and hides it from Ariel under a chaise in the properties department while she thinks on how to change into a respectable director (her 1st rehearsal was a failure). She feels like crying and puts the scrimshaw in her pocket (so her tears won't land on it and summon the Sea Goddess) and then decides to drink out of the "drink me" bottle from Alice in Wonderland in hopes that it will change her into the director she wants to be. Ariel shows up after she drinks and sips it. She is basically drunk and Ariel leads her in a dance at the end of which he kisses her and she passes out. He steals the book at this point, he was listening in on the bathhouse conversation and knows about ripping out his page. Nate is upset she took off the scrimshaw because he believes the encounter with Ariel would have been different if she would have worn it.
While searching for the book, Bertie writes up a mini play to act out what happened in the properties department to see if she can find out what Ariel did with the book. Just as she's trying to figure out who will play Ariel, Nate shows up still upset. She tries to stop him but the play has already started and when it gets to the kissing part she is upset because now Nate knows about that and when she sees his face at the realization, she starts to cry. Her tears fall on the scrimshaw and the real Sea Goddess appears with chaotic waves thrashing everyone around. As she reaches to take back her bone from Bertie, she recoils exclaiming that Bertie is "his child" and angry she can't touch Bertie, steals Nate and his page from the book "for her troubles".
Bertie finds the book too late, Ariel has already pulled out every page but his own. Since he was written in as a slave, someone else must tear out his page for him to be free. He pleads with Bertie to free him but at this point she is livid with him (the theater is falling apart and his page being torn would destroy it all together). Armed with the knowledge that whatever she writes come true, she writes up a forged collar that enslaves Ariel to her every word and suppresses his wind power. Since Ariel freed every player and hid the pages in different scenes, Bertie is able to guess where he hid them and collect them all. By talking with Ophelia she finds out that by reading the entry line of each page, it magically rebinds itself into the book and calls back the player to the theater. Without Nate's page, she has an understudy repeat Nate's lines non-stop in hopes that he will turn up (it doesn't work). While she has the players sorting the pages out by play and saying the lines, the Stage Manager asks what to do with the invites to her play. It is discovered the Theater Manager never asked him to deliver them like he told Bertie he would. So, Ariel who is trying to gain Bertie's trust back (and freedom still) promises to deliver each one personally (with his power over the winds, he is the only one at this point who would be able to deliver them all in time) if she frees him. So, Bertie removes his collar and rips his page out of the book. Now it's opening night and everyone is rushing to get ready since they just finished reading every page, with the exceptions of Ariel & Nate, into the book. As Ophelia is walking Bertie out to the stage, we find out Ophelia is Bertie's mother. Just after the revelation she sits Bertie on stage, places the book in her lap and tells her to read the play, it is Bertie's play of how she came to the Theatre. Here we find out the Mistress of Revels who traveled with Bertie as a child performing for money to raise her and who brought her to the theater is Mrs. Edith (the wardrobe mistress). She is the one who named Bertie, Beatrice after Shakespeare's character that would not be put upon by anyone, Shakespeare because of her magical way with words and Smith Mrs. Edith's last name (she never had any children). At an early age, whatever Bertie drew/wrote came to life. But, when one day thinking she could fly, Bertie jumped off a cliff into raging waters and survived, the Mistress of Revels Mrs. Edith brought her back to the safety of the theater. The play sells out and gets a standing ovation, both of which were part of the terms to allow Bertie to stay.
Bertie confronts the Theater Manager about the revelations and he tells her she is still dangerous to the theater and how she proved him right by the ordeal that happened with the book. So, Bertie decides to write a the beginning of a new play in the book where she, Ariel and the 4 fairies leave the theater on a quest to find Nate. She is the new Mistress of Revels and it ends with them in a caravan thinking about how they are to make a living to survive and Bertie wondering why she didn't think to write a new entry line for Nate on this adventure so she writes "Enter Nate" opening it up for the sequel.