Sparks are champions of (weird) science, complete with capes and costumes and amazing superpowers that only make sense if you don't think about them too hard. Darkliings are creatures of myth and magic: ghosts, vampires, were-beasts, and the like. Doors creak at their approach. Cobwebs gather where they linger. Kim Lam is just an ordinary college student until a freak scientific accident (what else?) transforms Kim and her three housemates into honest-to-goodness Sparks-- and drafts them into the never-ending war between the Light and Dark. Now they have to master their new abilities, while coming up with cool new costumes and code names for themselves. But the learning curve is steep and there's no time to lose.