Suzume Satsujin, a repentant former assassin with a fondness for pandas, is still training to be a ninja. In her spare time, she slays invisible demons with her best friend Dawn, a teenage grim reaper with a perverted pet demon. Now, the pair have been caught up in a magic spell that affects the entire city of Quagmire, U.S.A, warping their abilities and driving them berserk! And you just know when assassin and grim reaper girls go wild, comedy is sure to follow! Wait, did we say comedy? We meant terror. Yes. And comedy.