The Relativity Universe expands to the Arabian Sea with a swashbuckling new adventure! The day her Black Ship came into port, the Pirate Sayyida left her mark on a young Boy on shore, triggering a lifelong obsession with the Rebel Leader. Now the Boy is a young Man, and part of her crew. When the King of Siraf offers Sayyida a pardon in exchange for seeking an ancient site rumoured to house a buried Relativity Machine, the young Man begins to see that Sayyida might be more than she appears. Or less.