Transformers: Robots in Disguise, Vol. 6

The AUTOBOTS return to Earth—with OPTIMUS PRIME in command! But what brought them back—and what terrifying secret do the humans hold? Plus, GALVATRON is on Earth as well, with a plan to reshape it as he once did with Cybertron. A bold new era begins here! Collects issues #28–32 of the hit series!