In the beginning, the Allspark created the first 13 Transformers -- The Primes. They needed more energy, so they created the Matrix of Leadership. This was used to power a device that extracts energy from suns. The Primes search the galaxy for suns, vowing not to destroy a sun if it provided life to worlds around it.
The Primes came to Earth and saw early man and invoked the rule. The Fallen chose to rebel as he wanted the Matrix for himself. The Twelve hid themselves and the Matrix away in a tomb. The Fallen in space searches for it, and only one being can stop him -- the last remaining Prime, Optimus.
