In the year 2023, following the death of Randy Rose, the lead singer of The Residents, his son Randy Junior discovers that his father's ashes have been stolen and listed for sale on eBay by a mysterious culprit. While investigating, Junior discovers the footage for the group's unfinished feature film Vileness Fats in a foot locker in his mother's basement.

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.