Absolutely terrible, and beyond all over the place. This was actually like six books that didn't know how to have a cohesive narrative, themes, or characters. Honestly, I have no idea how to explain why this book was so bad without explaining every bad thing that happened, so here's the book:
It's got the first 100 or so pages, which are about various things: Rye (the protagonist) not wanting to have a soulmate but finding one anyway, Rye being kidnapped by her mother and sent to a boarding school where nothing happens, Rye being wooed by Xavier (her soulmate, also the werewolf king), and Rye feeling conflicted due to the way she watched her parents' mated relationship deteriorate and her mother's infidelity. This would've been okay as its own narrative or the interwoven half of a related narrative, but that's not what happened.
My favorite bit of the entire book was where the author introduces a school friend named Lexi, who invites Rye to a party. Then neither Lexi nor the party she wanted Rye to go to are ever mentioned ever again. Did Marcy Swales think this was going to be a magic boarding school book and just forget to keep going with it? I was bewildered.
The rest of the book is a different type of hot mess (or maybe several types). On the one hand, we have Xavier going off to solve a series of murders, which are solved really quickly! Huzzah! But then he confronts the murderer, who is a witch that he wronged hundreds(?) of years ago. So, with her dying breath, she casts a curse that compels Xavier to kill Rye. But don't worry! It's somehow both a non-issue for most of the book and the only persistent problem throughout the entire book? Like, this whole time Xavier, Rye, and their entourage are trying to stop this curse that really doesn't seem to be affecting them at all. Xavier explains that if they spend too much time together or are too intimate with each other, the curse will cause him to snap and kill her, but they still spend a lot of time together and they have plenty of intimate moments. I'm convinced that if they'd just pretended it'd never happened, they'd've been fine.
Xavier's next course of action in the prolonged narrative of combatting the extremely ineffective curse is to cast a spell upon the whole village to erase their memory of Rye and to remove her scent so that no one knows who she is. He has to do this to make Rye unidentifiable because other witches were trying to cast hexes on her, but they need to know what she looks like to do this. So, you know, obviously, he doesn't tell her that he does this, and she's very confused as to why no one knows who she is. I know it's like romance-writing 101 to have the overprotective male lead take safety precautions behind the heroine's back which cause drama when they're revealed, but this was pretty flimsy as far as miscommunication tropes go.
Then Kit/Exton shows up.
Let me explain: Kit (AKA Exton) is Rye and Xavier's son, but from another timeline, who came to visit Rye (because she's dead in his timeline and he never got to know her). I think it was supposed to be a twist, but it was really obvious from the moment Kit was introduced. This is very bad news for the writing (or maybe the story?) because, if you'll allow me to explain, when my first instinct is to assume the newly introduced character is actually a family member from the future, when there's no precedent for time travel in the book so far, nor have the main characters had unprotected sex, then something's gone terribly wrong). That was a whole thing.
Next, there's a werewolf-y couples' festival, and Rye is heartbroken the whole time because, to reiterate, Xavier mindwiped the whole village to not know who she is (meaning Xavier and Rye can't be seen together, except for when they're not following this rule, which is all the time). It finally felt like we were building to a romantic climax for them during this part of the story: there's a couples' festival, poorly-plotted angst, the clash between royal responsibilities and personal desires, and lots of puppy eyes from across the room. But at the end of the festival, when we're supposed to have them finally solidifying their relationship with each other and committing, the author, instead, gives us a synopsis of all the lovey-dovey shit that I might've actually enjoyed reading. It was something along the lines of "Rye and Xavier became mates, then got married, then Rye had her coronation." The climax was supposed to happen here, I'm sure of it, but instead of getting to feel the strong emotions of the romance coming to a peak, we were given a couple of sparse sentences that pushed the main romance plotline into essentially a footnote.
In case you thought that the book was going to be near its finale, now that the romance had unfolded, you'd be very wrong. The whole curse problem remains (not that it was a problem during the romantic synopsis, huh?), and Kit/Exton is all grown up and dealing with his own timeline's problems. I'm not usually a cliffhanger-person, but I think I would've respected a cliffhanger around this point. It's really about time to throw the towel in on the story and come to peace with the idea that time spent poorly is a sunk cost? Cutting the narrative off at this point would've made whatever the rest of this story is supposed to be a more engaging narrative, since it would've maybe cut the plotline into more distinct pieces rather than the odd amalgamation that they become. Alas, we continue.
There's a mermaid king and there are pixies thrown in, and their whole narrative purpose, as far as I can surmise, is to give us infodumps about the curse and explain to Rye and Xavier how to finally solve it. Essentially they need to let the curse run its course and then resurrect Rye. This, of course, seems like the nuclear option. It's actually at this point that I recall that at the start of the book, somewhere around when the curse was first cast, it was mentioned by one of the resident magic-experts that one way to break the curse would be to have another witch lift it. This seems like it would've been an easy option, but instead, for the past two/three-hundred pages, Rye and Xavier have been experimenting with magic clay and iron gloves to try to remove the curse. And now that they've exhausted that well of creativity, they're ready to jump to their last resort, never having tried Plan A. So the main problem with the last resort is that it requires Exton/Kit to find a witch who can resurrect people, but it has to happen before Exton/Kit finds his soulmate. This kind of seems like it'll be a bunch of waiting around, which is 100% true and very boring.
I'm a big girl; I can handle an infodump just fine (it's lazy writing, but I can deal). What I can't handle is when the author meant to infodump on something, maybe somewhere along the line decided to weave the information gracefully into the narrative, forgot to write in the information at all, and then references backstory and characters that were never introduced. I'll explain what I'm talking about, I promise. In the last hundred pages of the book, the characters start talking about someone named Lafayette and someone else named Truman, who I infer from the bare minimum of context must have been important figures in the recent witch's history. But really, I can't begin to describe how jarring it is to read about Exton/Kit threatening to turn a young woman over to Lafayette because of the revenge(?) Lafayette wants on Truman's descendants(?), when Truman and Lafayette were not previously mentioned in the book. It's a mess.
The young woman being threatened? A witch (Gemma) who happens to be Kit/Exton's mate and who can bring dead things back to life. And he has to convince her in the last fifty pages to participate in the breaking-of-the-curse. I fully applaud the author for not trying to fit Kit/Exton's and Gemma's entire romantic arc into the last fifty pages, because based on my experience reading this book, that's exactly what I would've expected her to do. But Exton turned into a womanizing d*ck somewhere around page 475 for no reason whatsoever, and so the last bit of the book was mostly spent having him be a d*ck towards the witch, which was kind of just annoying to read. When writing an enemies-to-lovers arc (which I assume will be a main element in the second installment, which I will not read), it's important to balance kindness with cruelty and to make the attraction between the characters seem realistic, so that it can be a foundation for growing respect and appreciation. Instead, Exton hurled brutish insults at Gemma for about fifty pages straight. Ick.
If it seems like my review was all over the place, it's because this book was all over the place. I'm not sure what story Marcy Swales wanted to write, but it seemed like she wanted to write several and didn't know how to bring them together. Lots of plotlines were abandoned (Murder mystery? Werewolf school? Parental affair? Toby and Eli's forbidden doomed romance? Repairing the relationship between the merfolk and werewolf kingdoms? Or the witch and werewolf kingdoms? The title alludes to a becoming-royalty plotline that didn't really happen. Even the main romance was abandoned), lots of side characters were given an excessive amount of backstory that made them seem like they'd be more important to the narrative, the main character was supposed to be strong and rebellious (I think) but came across as whiny and wishy-washy, and the book frequently contradicted itself.
If this sounds like the kind of book you'd like to read, I applaud your bravery and self-sacrifice. I did not enjoy it.