I'll be honest with you I held very little hope for this movie but it started with the What If? reason for the space race between the USSR and America and a Cybertronian spaceship (great opening battle on Cybertron) hidden on the dark side of the moon and footage of the astronauts searching the ship for technology and this information being held back from the Autobots.I won't ruin the plot as it's plain to see as you watch.
The Decepticons have human agents and and their own plans for the Cybertron and Earth, nearly everyone is back with a few new faces like Frances McDormand (not bad), John Malkovich (no idea why as his character is mad and not needed), Patrick Dempsey( misused as a bad guy) and Rosie Huntington-Whiteley as the love interest (replaced Megan Fox after the Hitler quotes got her fired, she's very pretty and not as wooden as described but one scene had me cringing but I did mention she's very pretty).
There's plenty of eye candy, explosions, humour (an autobot called Roadbuster shouting the words "ya Nancy Wanker"), fighting, military ordnance, shouting, running and explosions.
It's a romp, John Turturro returns and is better than ever, Leonard Nimoy has an iconic voice, what can I say it was worth a watch just leave your brain at the door.
I must admit I like the Decepticons...they're evil and have such cool stuff.