Cass has always wanted to audition as an acrobat for the famous Circus Boat. But when her chance is snatched away she comes up with a new plan. She secures a job on the Palace Boat following the circus around the islands. Yet Cass has been invited on the boat for a very different reason - and it's not long before she is embroiled with thieves sword fighters and a mysterious group of women called The Company of Eight...