A band of benevolent Maximals track a pack of power-seeking Predacons to a mysterious planet. When they both crash-land, they establish themselves upon the planet and clash, commencing the Beast Wars.

A large mountain containing the precious mineral Energon is discovered. This leads to a race between the Maximals and Predacons that culminates in a brawl between beasts.

When Cheetor messes up an important mission, he decides to fix it on his own. But when he is lured into Tarantulas's net of deceit and torture, Rattrap is the only one who can save him.

The Maximals try to place a Predacon detection system during an Energon storm and Cheetor somehow ends up in the Darksyde, while Terrorsaur ends up in the Axalon. Using Terrorsaur to discover how the transportation occurred, Dinobot goes to Optimus with a plan to beam a bomb to the Predacon base. Meanwhile Cheetor discovers an Energon vein running between both bases.

Optimus Primal is abducted by an otherwordly probe, leaving the Maximals leaderless. Amidst their bickering and squabbling, the Predacons prepare to launch an attack.

Terrorsaur discovers a floating mountain, rich with the mineral Energon. With a surge in his power, he scraps Megatron and takes control over the Predacons. Now the Maximals must destroy the mountain to stop his power-mad reign.