The Autobots and Decepticons find that the voices of three aliens (Allegra, Zebop Scandana and Basso Profundo) can make a powerful weapon.

During a battle, the Protectobots finish off the Combaticons, with the exception of Swindle. Megatron orders Swindle to reconstruct his destroyed comrades or else a bomb in his head will go off, destroying him. As Swindle works to complete this task in time, three students get a hold of Brawl's personality component and use it for their science project, B.O.T., with disastrous results.

Daniel's nightmare troubles get a lot worse when the Quintessons make them real. Autobots and Predacons are forced to join forces in order to fight these nightmares.

Wheelie and Daniel want to have a party for Ultra Magnus after a recent good deed of his. However, Ultra Magnus' birthday is unknown, even to him. Wheelie and Daniel try to find out the answer from Autobot records. Unfortunately for them, Cyclonus decides to intervene.

A group of Autobots, Cyclonus and Quintessons become trapped within a Quadrant Lock Disc that has also kept the planet Zimojin and it's inhabitants trapped for thousands of years. To get out the Quintessons need a component belonging to Perceptor, but he has several parts taken out which are used by Katsudan to make repairs on a robot. Now in the small form, Perceptor learns the Zimojins were trapped there by the Quintessons out of fear.

The space bridge accidentally sends several Autobots and Decepticons to a strange world in which they are no bigger than toys.

A creature made out of energy, Kremzeek, gets made and causes trouble for the Autobots, Decepticons and Japan.

Octane locates the defeated Trypticon and brings him to Carbombya. There, they follow orders from Fakhaddi in order to get energon. They begin stealing landmarks around the world for him.

The Decepticons are trying to learn the secret surrounding a man's invention and go after his teenage daughter. Powerglide intervenes to rescue her, but this causes her to fall in love with him.

Marissa Fairborne and the Technobots encounter Dirk Mannis, who possesses the dangerous Recreator. Turns out the Quintessons want the Recreator for themselves and Dirk is happy to give it to them so long as he gets paid. Marissa and the Technobots get tangled into the resulting betrayals and scheming.

Spike is severely hurt during a battle. His mind is placed into Sparkplug's recent creation, Autobot X, until his body can be saved by an operation. But the Autobot X body was unstable to begin with and Spike soon ends up betraying his friends.

Innocent people fall under Megatron's control through music being played at a club.

Seaspray falls in love, but the object of his affection is part of a rebel movement on another world.

Hoist gets a big break into show business after rescuing stuntmen. Sunstreaker, Powerglide, Warpath and Tracks are along for the ride as well. On the road to a movie career, however, they learn Dirge has stolen a device from Wheeljack's lab.

Daniel leaves a banquet being hosted by his parents. He and Grimlock end up discovering a Quintesson chamber and get stuck in a magical world.

Two planets are locked in a destructive war and the Autobots attempt to bring about peace. Things do not go so well, however, until a Quintesson Journal is found and provides evidence of Quintesson involvement in the war.

The Junkions fall victim to subliminal messages from the Quintessons, who are trying to get a journal off the Planet of Junk. This also causes the Junkions to attack Sky Lynx and Astrotrain, which brings the Autobots and Decepticons into the situation. Unfortunately, a screw up makes the Junkions send out the subliminal messages on their own, bringing about mass confusion and destruction.

Spike, Hoist and Warpath find their battle with a group of Decepticons interrupted when they all get sent back in time to the middle ages.

A hunter sets his sights on Optimus Prime and uses several captured Autobots to force him into a confrontation.

Astrotrain and Blitzwing leave The Decepticons to do things their way, which includes capturing Megatron and Starscream and seizing control of a stadium.

The Decepticons work with a smuggler to take over a Mideast palace and begin acquiring plane parts for the construction of a air fortress. The Aerialbots head to the scene, but Slingshot and Sky Dive get into trouble. But a young man known as Hassan comes to their aid to help save the day.

Astrotrain tricks a race living on one of Saturn's moons, Titan, into thinking he is a god and gets them to do his bidding, which includes getting a hold of a newly discovered power.

Most of the Autobots lose their ability transform to robot mode after the Decepticons use a device on them. A handful of Autobots still capable of transforming are their only hope.

With the others rendered powerless, Smokescreen has to enter the gambling world to get the Energon needed to revive them.

An alien is discovered to have a powerful weapon that fires crystals, which are taken from a creature Kup knows of, Chaos. Galvatron plans to construct his own powerful weapon on Chaos' home and several Autobots race to prevent him from using it on Cybertron.