Robyn has been taken in by a mysterious captor, but they will soon show themselves as anything but a mystery-and may well prove useful in Robyn's quest to clear her name. Meanwhile, the true origins (and purpose) of the Vigilante Hunter Squad, as well as Mayor Nyguen's identity, are revealed, and it all will spell certain doom for the Big Apple. Will Robyn, be able to enlist the help of the creatures, crazies and criminals of the Underground, or will they enlist her into an early grave?