Bumblebee's first movie trailer featured the humanist side of a mechanical girl named Charlie Watson with a robot named Bumblebee. Different from the previous Transformers series that put forward the war mechine effect everywhere, the film further shows the humanist side of a robot named Bumblebee with a mechanical girl. As seen in the first poster below.
On the run in the year 1987, Bumblebee finds refuge in a junkyard in a small Californian beach town. Charlie Watson (Hailee Steinfeld), 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 but this is something more than.