I wish I could give half stars. 3 stars seems too little and 4 stars too much :( I tried to clear my head and found that I disliked to many things for it to deserve 4 stars so I settled with 3. 
 The book suffers greatly from "middle book syndrome", resulting on nothing much happening and sounding a bit repetitive. 
 Honestly, little happens until half of the book. The story starts with Winter opening the mines and finding the legendary magic chasm that no one could find for centuries in almost no time. The next 200 pages follow Meira whining about being queen, Mather pinning for Meira, Theron being selfish and Sir obeying everything the Cordellians order (wtf? Where is his fighting spirit?). 
 Meira and Theron start a treasure hunt/political alliance quest. Meira wants to find the keys to the magic chasm to prevent their use and find allies against Cordell, while Theron wants the complete opposite. He wants to open the chasm and share the magic with all the kingdoms, therefore he seeks for each one to sign a treaty. Don't get me wrong, I love treasure hunts and court intrigue... but the first half of the book failed to live up to my expectations. 
 First, the treasure hunt was too damn easy. Every secret revealed to Meira with little puzzles and too little trouble. 
 Second, it was boring. The first half was booooooring. The number of pages could have been reduced by half if: 
 1. Meira would stop saying how being queen doesn't let her be the free spirit she was on the first book and moaning over it 
 2. Mather would stop with the emo act 
 3. Meira and Theron would have a serious and clear conversation 
 4. Meira would stop encouraging Theron if she is angry or doesn't have feelings for him anymore. (Yes, I hate love triangles with indecisive main characters) 
 Third, I'm not really fond of the third person, past, Mather POV and first person, present, Meira POV change. Nope, this doesn't work for me. What is the point of changing tenses and from first to third person? Just pick one unless there's a reason. 
 The second half of the book was way better and has a lot more action. 
 We meet some new interesting characters, Ceridwen (sister to Summer's king) being the one I liked the most. She is rash, fiery and a bit of a mystery. 
 We also get to know the remaining Rythms, Summer and their rulers. I liked how every country was different in its own way. 
 I hope the next book is a bit "more". I would like the characters (sir & mather, mather & meira, Ceridwen & Jess, etc.) to actually have time to resolve their issues and intensifying their bonds... I feel we need more character development (Meira realizing that she can be both, queen and warrior, doesn't count and Mather realizing that he can fight for Meira doesn't count).