I really salute Rose Hathaway for being brave and independent, but she is reckless. It's difficult for her to choose Love and Duty.. 
 Rose leaves the Academy and Lissa to find Dimitri Belikov, her mentor and lover who turned into a Strigoi. Rose needs to kill him.. It was hard for Rose to kill someone she truly loves and she puts herself in danger. As she traveled in Siberia she met Sydney, an Alchemist. Sydney was her guide to find Baia, Dimitri's hometown. She reminisced every memories with Dimitri, I feel sorry for her.. She encountered Strigois along the way. She met Dimitri's family too. Olena, Yeva, Viktoria, Sonya, Karolina etc.. And a family friend of Belikovs,Oksana (spirit user) and Mark (Dhampir). 
 As for Lissa, she was reckless too.. She found a new friend Avery, along with her brother Reed (this guy is heck Grumpy) and Simon (Avery's guardian) .. I didn't expect that they are the antagonist here. I mean wow! Too many revelations indeed. 
 Well there's a lot more. This book is SHOCKING 
 Here I come Spirit Bound!