THE CORE IS TOO DAMAGED BY DARK ENERGON TO SUSTAIN LIFE ON CYBERTRON. IN ORDER TO REPAIR ITSELF, THE CORE MUST SHUT DOWN FOR MILLIONS OF YEARS. CARRYING THE POWER OF THE MATRIX OF LEADERSHIP INSIDE HIM, OPTIMUS PRIME MUST SADLY ORDER THE EVACUATION OF THE ENTIRE PLANET IF THE RACE OF TRANSFORMERS IS TO SURVIVE.