On his birthday of all days, 13 year old Divi Rogallo gains unspeakable powers after slaying a gargantuan, dozen-headed Terrabird already bloodied and weakened by the army that failed to kill it, making him a person of interest for Clip Sharinggen who is seeking the final member of his mercenary group. The world in which they live is governed by video game mechanics that affect their lives. These mechanics are quantified attributes of a person or nonhuman animal such as life (HP), strength, defense, and speed. These mechanics play a serious role in the world, determining either success or failure for the characters. For this reason, Divi and his mercenary friends are constantly theorizing about these mechanics to ensure their own success. The group ventures through sublime natural landscapes and extreme climates, often to get a shot at their beloved bounty. The mechanics of this story are loosely based on RPG systems in video games and most recently: The Quantified Self Movement.