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.

Jayce is led to an abandoned ship by a signal from his father. Jayce finds his father has left a message for him but he needs more power from the Pride to receive the coordinates of his father's destination. A self-destruct mechanism is activated.

Monster Minds are planted aboard the Pride to contaminate the water supply. The water is jettisoned, forcing Herc to land the Pride in search of water and a Cobalt-49 crystal to repair the guidance system damaged by the vines. This is Saw Boss' trap.

To lure Jayce to his death, Saw Boss puts a marker in the shape of the root on an ice planet that is about to be destroyed by a volcano. Herc lands the Pride on the ice which is then nearly covered by an avalanche. The native people seek help.

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.

Audric's image is being projected from a body of water on a planet. Jayce goes down to investigate even though Monster Minds are busy draining the water off. Jayce meets the fish people, the X'Hal, and the Old One, and they communicate by telepathy.

On the ice planet Auriga, revolutionary leader Cyrilla makes a deal with Saw Boss -- she delivers Jayce in return for Saw Boss deposing the gangster casino owner, Marduk, who's made slaves of everyone on the planet. Cyrilla realizes her error.

After launching setting up a Monster Mind infested galaxy to collapse into a black hole, the League discovers human lifesigns on an asteroid. Jayce is determined to save him, but has less than 3 hours before it's too late.

The guardians of the Great Library of Hebron contact Jayce for assistance when they come under attack from Monster Minds. The Lightning League must prevent Saw Boss from stealing the Purple Tome, a book which contains the spells used by the ancient Ashvar civilisation.

The Monster Minds set a trap for Jayce, offering him Audric in exchange for the root. Audric proves to be just an illusion generated by King Phineas after Saw Boss threatened to destroy his planet. The Lightning League and King Phineas must work together to fight the Monster Minds and save his people.

Saw Boss lures the Lightning League to Kyros, a planet which is being turned into crystal after the power of the Bloodstone was drained by the Monster Minds. Jayce must restore power to the Bloodstone and use it to save the planet before it is too late.

The people of Adelbaron are forced to slave in mines that produce rich nourishment for the Monster Mind vines. Saw Boss captures the young brother and sister of Kumari to force her to brig Jayce to him. Kumari is picked up in space by the Pride.

Saw Boss agrees to allow Orion, a hunter who hunts only the most worthy prey, to hunt for Jayce. Orion captures Jayce and takes him to the planet Mortaros to carry out the hunt. Flora undergoes a dangerous procedure to heighten her sensitivity to the root and help the Lightning League find Jayce.

The planet Baz sprays all their plants with pesticide to keep the Monster Minds from invading their planet, but the Monster Minds send vines to cut them off from outside shipments of food. Zena, the princess of the planet, contacts Jayce for help, but when the Lightning League arrives on Baz the pesticides begin to kill Flora, and the Monster Minds prevent them from taking her to safety.

In search of a message from Audric, Jayce lands on a planet protected by telepathic plants which keep the planet concealed. Saw Boss makes a deal with a wicket wizard who has put a sleeping spell on the princess who controls the plants.

By using a lock of Audric's hair, Saw Boss creates a clone which tricks Jayce into a trap. Gillian suspects the truth and convinces Jayce to leave the root behind as a precaution. Jayce is captured and a clone of Jayce is sent back for the root.

Computer calculations give Zartan Omega as the probable location of Audric. This planet is covered with blue light from the red dwarf sun and grows only giant flowers. Upon reaching it, though, they discover Monster Minds have set up a satellite.

An unconquered planet in the midst of Monster Minds intrigues the Lightning League and they go to investigate. Upon crash landing they discover the energy of the Pride and the vehicles and their own energy is being drained.

The Lightning League heads for the junk planet, Xeron III, to use the metal as a giant antenna to send radio signals throughout the universe in an attempt to contact Audric. An old woman, Iana, lives on the planet with an odd assortment of creatures.

Saw Boss offers a huge reward to pirates and cut-throats if they will deliver Jayce to him. A pirate scratches Herc with his special ring which causes Herc to become evil and start plotting against Jayce. Jayce must take the Pride to Planet Hippo.

Neetra manages to get a message out regarding her planet, Tekka. Monster Minds are about to attack to acquire their powerful fuel, miran, to power his missiles. The Vertim and Batim colonies rival each other for control of the pyramid made of miran.