Spike Witwicky has been away at college for a number of years now, and neither his brother Buster, nor his father, Sparkplug, thought to inform him of what was going on at home! Well, all these years of thoughtfully sparing Spike the worry of knowing giant robots wre battling each other on his doorstep are about to come to nought. Spike's gonna get involved in robot war... in a big way!