Big robots who morph into different shapes, most commonly vehicles, and fight a civil war against each other because The leader on one side is essentially like Stalin, killing millions of own species because he’s trying to make him and followers The absolute rulers of everything, when in Reality he’s a bloodthirsty murderous tyrant Who craves power, well the other side has a leader Who wants to bring peace to the known universe and make their planet prosperous again, but ends up destroying it because of the Civil War When he could’ve easily stopped it and killed the other sides leader easily so many times.
Cybertronians are just Earthlings in robot bodies.