When Fluttershy buys herself a new car she then finds out that this is not an ordinary car, but an alien robot who can transform into vehicles. The then becomes friend with this alien and they become great friends over time. Because it's a mystical bond between man and machine. But they will be hunted by Decepticons who wants to take over Earth, so Bumblebee has to protect Earth and it's people from the treated Decepticons.

Autobots: Bumblebee...
Decepticons: Shatter, Dropkick, Blitzwing.
Humans: Fluttershy, Agent Burns, Agent Fowler