WATCH: ‘Transformers: Age of Extinction’ Official Second Trailer

Optimus Prime and his army of world-saving Autobots have been through a lot.

After three explosive films, they’re now being re-introduced in a 4th film that sees them being hunted down by the very humans they saved once before. With an invading force of new enemies to deal with, Prime and his allies must now gather a new crop of soldiers for battle. Which means good ol’ Grimlock is going to rampage all over the enemy in this new trailer we stumbled upon.

Sit back and take in all the explosive glory seen here in the 2nd trailer for Transformers: Age of Extinction!