This is a story where transformations are happening around a girl.

Maybe the girlfriend is a witch, able to transform with a magic wand or a little polyjuice potion?

Or maybe the hot next door neighbour is really an alien, not fixed to any specific shape?

Or a geeky inventress with a perverted device?

Or it is about a secret agent on a sexy mission?

Anyway, either the girl or somebody around her's a fucking transformer. Autobots, roll out! ;)