No it does not take place in an alternate Victorian England.
Trios is a bustling port town. Steam engines abound, electricity is new and wonderful, and magic is elemental yet complementary.
Our story begins with a ship coming into port. Gregory Gallagher is the son of a shipping merchant. One of his father's ships is late, but has made it safely, so he thinks the only thing he has to worry about is overseeing the unload and storage of the cargo. But this is not your garden variety shipment. Let's just say no one knew they'd been carrying live cargo. And it has escaped.
The player characters (i.e. policemen, sailors, guildsmen, travelers, etc) will somehow become involved in the search and capture of the cargo. But what happens when they find it?
I'll consider any species/race, though I'd want to keep them human-scale for simplicity's sake.