Stories of the Strange discussion

Creatures and Animals pitches here please!

So...i guess we could do a werewolf role play, but I think that everyone is pretty much exhausted that topic. What about...people that can change into animals? Let's say that once a year that people cannot help but change into their animal forms, so they go to this house in the country hours outside of london where they can hunt and run around until they're able to turn back into their human forms. So maybe this year, after that night where they're forced to shed their human form, they're not able to turn back into humans!

hm...i need more of a plot. any suggestions???