Optimus just escaped with humans, he called all surviving Autobots to a point in the desert where they would be hidden. Drift, Bumblebee, Hound Crosshairs, showed up, Cade, Tessa and Shane showing up as humans with Optimus. But the crazy part was, you were there too. Optimus and Bumblebee thought you were dead after forcing Optimus to go to the last escape pod instead of you, but you were there.