On the planet of Cybertron (TRANSFORMERS home world), the TRANSFORMERS war between the AUTOBOTSTM and DECEPTICONSTM rages on. The DECEPTICONS seek the domination of life-giving planets throughout the universe and only the heroic AUTOBOT warriors – led by OPTIMUS PRIMETM – stand in their way. AUTOBOT losses are mounting and their desperate last stand takes a turn for the worse when the DECEPTICONS introduce their new secret weapon: the massive DECEPTICLONE Army. Created by the DECEPTICON leader, Megatron, the DECEPTICLONES are specialized robots built for the sole purpose of destroying the AUTOBOTS.

Defeat is at hand for the AUTOBOTS when a distress signal from the MINI-CONTM robots, the long-lost third TRANSFORMERS race, reaches Cybertron. Stranded on Earth, the MINI-CON have the ability to tip the balance of power in the ongoing TRANSFORMERS War. Knowing this, the AUTOBOTS and DECEPTICONS race to Earth to find the MINI-CON.