The Autobots were at Mt. Moon.

"All arriving Autobots, in par, training and debriefing in fifteen minutes. Mirage, report to bay twenty-three. Sideswipe, bay thirty-seven for weapons assessment"

"This gun is my perfect invention, Ironhide" Wheeljack said before he sees Mearing and other people. "Oh, good! You're here! My name's Wheeljack . I hope you have answers for him.

"Well, did you search the crash vault?" Ironhide said

Optimus started to explain.

"The ship's name was the Ark. I watched it escape Cybertron myself. It was carrying an Autobot technology which would have won us the war. And . . . its captain"

"Who was its captain?" Professor Cerise asked

"The great Sentinel Prime" Optimus answered. "The technology's inventor. He was commander of the Autobots before me. It's imperative that I find it, before the Decepticons learn of its location. Our Autobot spacecraft has the ability to get there. And . . . you must pray it's in time"