WereApocalypse

In a future not so far away from now, in a society where all animals are mostly the main focus, some scientists have been trying their best to make sure even domesticated animals remained healthy, but that also possessed longevity, so that they could grow old that same way as humans, then Vue Bionics presented the ProPet, a formula that was meant to be injected into the pet's body, and within a frame of a week or less, said animals would acquire an immense amount of durability, a slowed aging and a better health. However, at least 2 years later after the release of the ProPet, some incidents started going on in New York, animals suddenly start acting like ferocious beasts, and then, one day, a man got bitten, and then...
A flood of weredogs, werecats and multiple people turning into animals started appearing in every corner around the world. Surviving was hard, but luckly, a group of 5 survivors remained hidden, all under the same steel roof.