Ash--or Princess Adelisa--is the youngest child of the queen, recently returned to the city of Kestrel's Haven after spending six years on the other side of the country. Ash was hoping for a joyous reunion, but the reality is far from it. Her mother is holding the kingdom together by a thread; her brother has only taunts and jibes for her; and court is full of nobles who openly mock and dismiss Ash, who uses a cane and needs braces to strengthen her joints.

Splinter is the youngest child of one of Haven's most prominent families. She's fierce, determined, and adventurous, and she has her sights set on becoming a knight just like her older brother. Even if everyone says she can't because she's not a boy. So what? She's not a girl, either.

A chance encounter throws Ash and Splinter into each other's orbits and changes the course of the kingdom's history. The princess and her new squire will face bullies, snobs, gossips, and their own disapproving families. But when they uncover a shadowy group of nobles plotting to overthrow the queen, they will show everyone how legends are born. Together.