On the run in the year 1987, Bumblebee finds refuge in a junkyard in a small Californian beach town. Charlie, on the cusp of turning 18 and trying to find her place in the world, discovers Bumblebee, battle-scarred and broken. When Charlie revives him, she quickly learns this is no ordinary yellow VW bug.

A 16-year-old international assassin yearning for a "normal" adolescence fakes her own death and enrolls as a senior in a suburban high school. She quickly learns that being popular can be more painful than getting water-boarded.