Transformers Prime: Shattered Glass
After a GroundBridge malfunction, the kids find themselves warped to another dimension, where everything is switched for them. They find that the Decepticons are on their side, and that their Autobot guardians wouldn't think twice about harming them.
Meanwhile, the kids from the SG universe are warped into the dimension we all know of, where they find that the Autobots are on their side, and that their Decepticon guardians wouldn't think twice about harming them.
Somehow, they all need to find a way to get back to their respective dimensions, before another threat can destroy them all.