Twelve-year-old Lark is determined to escape her squalid life at Miss Starvenger’s boardinghouse, but she needs to find the coin to do it. Her grand scheme? To steal her fortune from the Royal Museum. Unfortunately, her heist goes off the rails, and Lark ends up stealing a magical sword right out from under the nose of Prince Jasper, who’s none too happy to have his plans thwarted. Lark soon discovers that the sword has a mind of its own, and it has chosen her to be the next Nightingale, a fabled hero who must vanquish an ancient evil that is waking after centuries of sleep. But working alone has its limitations, and relying on others after a lifetime of disappointments is difficult. Still, Lark will need the help of her boardinghouse roommates if she wants to defeat the villainous forces that threaten to dismantle everything she holds dear.