When one of Audric's experiments goes wrong, Saw Boss and the Monster Minds are created and set out to conquer the galaxy. Audric creates a magic root which can fight the Monster Minds but it is split into two, one half is taken by Audric, the other by his son, Jayce. The Lightning League seek the help of Herc Stormsailor to escape the planet and locate Audric.
Jayce travels to Xiang in search of a secret message left by his father in a vase. Saw Boss realises what Jayce is looking for and orders all vases destroyed and Jayce must locate the vase before the message is lost forever.
The Lightning League go in search of the Helmet of Valroth, which could be a powerful weapon against the Monster Minds but the power of the helmet starts to change Jayce.
The Lightning League discover the Monster Minds about to take over a planet where all plantlife grows to many times its original size. Fearing an army of gigantic Monster Mind drones, they go in search for allies to help the fight, but find the native order of knights very hostile to all foreigners.
The Lightning League investigate an abandoned ship which is emitting a signal from Audric.
While stopping to repair the Pride, Gillian and Flora are captured by Monster Minds.
The Lightning League is trapped on a icy planet about to be destroyed by a gigantic volcano.
Jayce's search for Audric leads him Taber's Belt the home of the Pirate's Guild led by Morgana, an old friend of Herc. When the Pirates, who are working for the Monster Minds, capture the Pride, the League must try to escape and break Morgana free from Saw Boss' influence.
Having lost Audric's trail, Gillian takes Jayce to the place where all time meets in order to show him the future and track down Audric. Jayce sees a future where the Monster Minds stand unopposed and only by confronting Saw Boss can he change the future and save his father and the galaxy.
