Fi Dolan's worst nightmare has come true. People she considered friends have been plotting against her for months and the morning after a failed attempt to eliminate the traitor, she discovers her little brother and the Winter Princess have gone missing in the middle of the night. After two weeks of fruitless searching, Flint and Fi decide to head for her gran's old house in the Catskills to continue on their hunt for the missing journals. The journals reveal much more than Fi bargained for, though. Shocking secrets about the Dolan family’s history are uncovered; secrets that could shatter their plans to free humanity from faery rule. Desperate to save her family, Fi keeps searching the journals for the answers they need. When the Summer Prince happens upon them with a hostage Fi knows very well in his possession, she fears all hope is lost for their cause. Will Fi find the answers she needs to save her family? Or will the Summer Prince be the end of the resistance?