Sixteen-year-old Isabelle learns that she is the daughter of Robin Hood when her mother, Marien, sends her from their priory to get an urgent message to her father, aided by the Merry Men.

Isabelle of Kirklees lives a quiet life inside the sheltered walls of the convent with her mother, Marien. After she is arrested by royal soldiers for defending innocent villagers, Isabelle becomes the target of the Wolf, King John's ruthless right hand. Desperate to keep her daughter safe, Marien helps Isabelle escape and sends her on a mission to find the one person who can help: Isabelle's father, Robin Hood. She is thrust into a world of thieves and mercenaries, handsome young outlaws, new enemies with old grudges, and a king who wants her entire family dead. -- adapted from jacket