Left alone in the 1980s, Bumblebee is still very young. Bumblebee, the yellow autobot that does not know where to go and has no one, is constantly running and hiding in 1987. In the process, he took refuge in a quiet coastal town in California as a safe haven. Charlie is a young girl who is about to turn 18. One day he finds Bumblebee in ruins. Thinking she's seen a piece of junk that might work, the young woman sets out to fix it. Charlie, who takes Bumblebee to his workshop and starts working on it, discovers that this car is not an ordinary "tortoise" when he achieves his goal. Charlie, who is friends with Bumblebee, will embark on an adventure with him to protect the autobot, who has turned into his best friend, from the decepticons that are after him.