And children are disappearing.
Girl genius Tinker was once a human orphan, growing up on the Pittsburgh streets. Now she's an elf princess with all the bells and whistles. She rules over a melting pot of humans, elves, half-oni, and the crow-like tengu. Prejudices are rampant, pitting even the elves against each other. Hoverbike races, concerts of rock and roll fused with elf music, and artist communes of human and elves are proof that Pittsburgh can be a place where races and species can meet and meld in freedom.
Tinker is determined to make her city a place of such freedom. She's going to have to kick butt and take names. And she has to do it quickly. Seven elf children are already missing -- and the oni eat their prisoners when they outlive their usefulness.
Tinker uncovers ancient secrets and a web of betrayal as she searches for the children. The oni will stop at nothing to win, so neither can she. At five foot nothing, Tinker's greatest weapon has always been her intelligence. Politics, she discovers, is a battle of wits, and she's heavily armed.