Harry and hermione have returned for their seventh year, both in disguise. A fledgling romance between the two leads to a walk around the lake and moments before harry can take her virginity, a meteor crashes into the lake.
Rising from the ocean is a massive robot. The transformers have arrived.
Scanning a dragon, the transformer hides out in the forbidden forest, trading info with the two while waiting for help from other autobots.
Until decepticons are detected and the two lovers team with the transformer to deal with them.
