A new minicon activates inside a highway tunnel.

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

A weekend's camping trip to the valley below the dam goes wrong when a violent storm moves in.

Autobot Blurr joins the team, but proves himself not much of a team player.

Megatron plots to destroy the Autobots once and for all.

Megatron uses the Minicons to lure the Autobots into a trap.

Starscream challenges Megatron for control of the Decepitcons.

Trapped with Sideways, Alexis, Rad, Carlos and their minicons become aware of a massive evil entity.

A new transformer enters the solar system.

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

On the moon, Thrust continues his plotting with Megatron.

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.

Alexis tracks a minicon in the vicinity of Mars.

Starscream trusts Thrust and returns to the moon base.

Sabre, Shield and Blaster together create the Hydra Cannon.

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

Thrust joins Sideways by passing through a portal underground.

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.

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

The purpose and meaning behind the endless war is revealed.