Spoiler Level: Medium
First and foremost, you've got to admire any "Convoy" reference in US Transformers, since Convoy is Optimus Prime's name in Japan.
Now as to the main plot: Someone's out to hijack a fancy new super-generator, and for once it's not the Decepticons-- it's an organization called MECH, a group of humans who pride themselves on having all the best technology possible. The Autobots agree to escort the generator to its destination, not realizing they'll be fighting against humans.
It's a great concept, but it's a bit of a double-edged sword as far as storytelling goes. Optimus understandably orders the Autobots to use minimum force, as he doesn't want to take any human lives, which really works, because that's the kind of honorable 'bot Optimus is. But on the flip side the battle scenes drive home the fact that this is a kids cartoon, and y'know, nobody can get hurt, as is seen by the multiple shots of MECH Agents escaping from cars before they blow up and using non-lethal force themselves. Clone Wars this ain't. So while the idea of Transformers being dragged into a human war as opposed to humans being dragged into the Transformers' war is really good, I'm not sure that this is the proper format to tell it.
As usual, as of this writing this episode is currently available to watch for free on The Hub's website, http://www.hubworld.com/transformers/shows/prime/videos.