The largest ship on the planet is like a city, with its own marina and aircraft landing strip the SeaCity is home to many thousands of passengers, their guests and the ship's crew. The luxury onboard lifestyle is threatened when Yuri Gregov demands millions of dollars, or he will sink the ship. He proves he has complete control of the ship by sending it on a crash course towards Gibraltar. 
To thwart the extortionist the guest passenger, Ray Quade, embarks on an ever twisting tale of subterfuge, intrigue, climaxing with a chase by helicopter and fast speed boat. The end is always in doubt until the finale.
This novel is a sequel to Palm Island and includes a return for three of the main characters.