As the Doctor (Tom Baker), Romana (Mary Tamm) and K9 (voice of John Leeson) head for the planet Calufrax in search of the second segment of the Key to Time, they are in for a surprise when the TARDIS brings them to Zanak, an entirely different planet occupying the same space coordinates. Did Romana take a wrong turn when she navigated by the book? No, the tracer registers that the segment is near. Nothing is as it seems in this story by Douglas Adams (The Hitchhiker's Guide to the Galaxy). The populace of Zanak lead affluent lives, thanks to the mysterious mechanizations of the Captain (Bruce Purchase). He regularly announces a new age of prosperity, and most of the people accept the extraordinary turn in their fortune without further examination. Little do they imagine that their benefactor - hidden on a forbidden mountaintop - is a roaring space pirate whose best friend is Polyphase Avitron, a cyber-parrot that brings death to anyone who displeases its master. All these elements will come together to reveal the greatest crime in the galaxy and the second segment of the Key to Time as well.