Jayce and the Wheeled Warriors

Jayce's father, Audric, worked to create a plant that would feed the world, but just as he succeeded, radiation changed his creation into plants with evil brains that use up the minerals and water of the planets. Audric then developed a good plant to destroy the evil ones. Audric makes Jayce Oon's master and sends Oon to find him to give him the root of the good plant. Thus Jayce starts the quest to find his father with the help of a magical ring of great power and the Wheeled Warriors - vehicles of great power, all given to him by the magician Gillian. Jayce, Oon, Gillian, and Flora escape the garden with the help of Herc, the mercenary pilot of his own ship, The Pride. Saw Boss and the other evil plants called monster minds are prepared to pursue Jayce to destroy him and the root.

The root, which only responds to Audric or something belonging to him, reacts to the Planet Xiang, which leads Jayce and Herc there even though it is a planet controlled by Saw Boss. They discover a message from Audric on a vase but before they can get it, it is stolen. Jayce and Herc and Oon are drawn further into the city where Saw Boss has laid a trap for Jayce. Jayce and Oon fall into a pit which is slowly being consumed by fire; but Herc, Gillian and Flora come to the rescue. Safely aboard the Pride they decode the message which is revealed to be too old to be of much use.

Gillian tells the story of Valroth, a powerful weapons maker who made living armor to protect his people many years ago. But the armor became too powerful and it was all destroyed except for the helmet. Jayce seeks the helmet, finds it, and after putting it on, his power is invincible. He easily defeats some monster minds. But the helmet is wicked and it takes over Jayce's body. Jayce and the power of light conquer the evil helmet, and then they destroy it.

Jayce and Herc land the barge on a planet with incredibly huge plants. Saw Boss is sending vines to grow there and Jayce must stop them. But Jayce, Gillian and Herc are captured by warrior crusaders Oon stumbles into the castle where they are being held and accidentally removes the shield from the stone making him the new leader. Everyone joins together to rid the planet of monster minds. The crusaders learn that not all intruders are enemies; some are friends.

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 and Jayce must work quickly to get the message while battling monster minds. They get away with only seconds to spare.

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 all part of Saw Boss' trap. Flora sees the vines and goes to warn Gillian who is searching for a crystal. They are trapped and Gillian falls off a bridge into a river. Saw Boss sets another trap, knowing Jayce will return for Gillian, but Jayce calls upon the ring for help and defeats the Monster Minds and rescues Gillian.