Tales of the Intermezzo: Plot Device

Tales of the Intermezzo is a Transformers fanfic series by Dave Van Domelen. While most of it exclusively involves corporate-copyrighted characters and is thus outside the scope of this wiki, the Plot Device one-shot retroactively crossed over into Robot Invasion.

Traumastar and the soldiers of the MAC Empire are caught in enemy territory! But when their escape goes wrong, a young Autobot has to channel the power of a Plot Device so that the Dvandom Stranger can prevent cosmic disaster!

The story can be read over here.