The decepticon space bridge is unveiled but is still not fully-funcional, Blaster and the other autobots realises that more despearte measures have to be taken... a full blown assault on Polyhex!! But this is only a diversion for the real plan - Blaster taking out the Spacebridge.
Lord Saxtrus becomes aware of the plot and attacks Blaster to a duel to the death in the middle of the void itself - escalating to all out war between the Cybertron Autobots and the Polyhex Decepticons until finally the autobots are forced off the bridge.. onto earth.