After becoming a vampire Valla chose to live in the depths of the oceans where she thrived until one day a terrible darkness destroyed everything she held dear. Vowing to find the cause of the darkness, Valla returns to land and begins a quest that leads her to Big Oil. Intent on stopping the darkness and those responsible, Valla hunts down the culprits in a unique take on on a very serious subject: the fuel industry and how it is harming the environment. Plus, there are deadly vampires. What's not to like about it?