Transformers. Heroes of steel (Reboot version.)

The ark and the nemisis have gone missing, the autobots and deceptions across the universe are leaderless, and cybertron is no more. Somewhere a small remote planet four young teens stumble across the autobot's ship and reignite the war with earth as the battlefield.

Now locked in a war that lasted for centuries they make new friends and face enemies from the stars and from earth in battles that would change the universe itself.