Starscream prepares to do whatever it takes to convince Galvatron the threat of Unicron is real.

As Unicron begins to awaken, Optimus and Galvatron decide to forgo their battle.

Hot Shot and Red Alert are sucked through a wormhole.

Children unwittingly reopen an ancient battle between Autobots and Decepticons.

The Decepticons capture all the children to use as hostages in exchange for the Autobots's minicons.

Enthusiastic young Sideswipe joins the team and Optimus tasks Hot Shot with training him.

The only way to defeat Unicron is to wake the minicons inside him and attack from within as well as without.

The Decepticons gain access to the Autobot base and attempt to take the other two minicons.

Desperate to make amends to his old friend, Hot Shot allows Wheeljack to shoot him, but this isn't enough.

Hearing Megatron say he is nothing more than disposable cannon fodder, Starscream defects with the Star Sabre.

Starscream trusts Thrust and returns to the moon base.

Grabbing onto Megatron at the end of a battle, Hot Shot and Sideways are transported to the moon.

Thrust joins Sideways by passing through a portal underground.

Starscream challenges Megatron for control of the Decepitcons.

The 'Bots reach Cybertron to find Megatron (now calling himself Galvatron) already winning the war.

While the battle continues, Hot Shot goes to Cybertron to try to convince Galvatron of the impending danger.

Alex, Rad and Carlos find the cargo hold of the Exodus underground and are adopted by three minicons.

On the moon, Thrust continues his plotting with Megatron.

In an ancient palace deep beneath the Sahara another minicon is waking. Who will reach it first?

A new transformer enters the solar system.

With Optimus damaged and temporarily out of commission, the newly-arrived Jetfire takes command.

The massive Tidalwave joins the Decepticons, but is, seemingly, defeated in battle by Hot Shot and Blurr.

Megatron sacrifices Starscream, leaving him to face the Autobots alone.

With Starscream's help, the Autobots infiltrate the Decepticon moon base.

Alexis tracks a minicon in the vicinity of Mars.