You are trying to survive a mass murder while being trapped in your highschool. You might run into an overly optimistic mutt named Olive, or a laid back and considerate husky named Sparky, or a hyper and always hungry Corgi named Brownie, or, just maybe, a clever and deceptive serial killer named Patches, and watch out, there's cats in the basement, one with a short temper and out for revenge named Coco, and another cat named Angel who is now a ghost, submissive no longer as Patches killed him.