Re: Unworkable Premises for a Campaign
Characters are all part of Project Nightwatch - "super soldiers" with various abilities, but all have enhanced strength, speed, and physical toughness with some side effects, including severe photophobia. All have to take a glowing green serum on a daily basis to maintain their powers. They perform a variety of "black ops" missions for their superiors. As far as they know, they are the first super-powered people in the world.
Gradually, they come to realise their superiors may not have the country's best interests in mind. And they keep finding hints that there may be other supers out there - possibly even another, even more secret, group of super-soldiers. And other strange things that don't quite fit into the special-forces-with-superpowers mold.
Eventually, they come back from one of their missions, to find their base has been invaded and basically destroyed. Everyone seems to have been killed, from a combination of firearms and melee weapons.
Digging through the wreckage, they are able to find the documentation that reveals the true source of their powers. The "super serum" they were injected with right at the beginning was actually the blood of a creature called "Subject V" - ancient, immortal, possessed of extraordinary powers, and sustained by human blood. The glowing green serum they have been using up until now is also human blood, with special food colouring to hide its true nature. Strong post-hypnotic suggestions were given, to keep their new urges in check, and to stop them inquiring too deeply into their origins.
Subject V is missing. The leaders of Project Nightwatch are also missing. The stocks of "serum" have been destroyed. And there are documents mentioning another supersoldier project, this time being derived from "Subject W"...