Bumblebee was in the desert with Drift, Crosshairs, and Hound. They had been hiding out from the government and were just trying to survive with what they had.

When they were on the road, Bee took a second to properly stretch. He then heard faint crying from an abandoned cave. Walking over to it, he found... A human baby, all swaddled up and was crying. Their voice sounded hoarse, like the tiny human had been crying for hours.