Three days after everyone on Earth has shrunk, Mason Reid, a student now navigating a gigantic transformed school track field, faces a deadly attack from a praying mantis. His life triggers an unexpected activation of the Infinite Evolution System, granting him the ability to see his enemy's weakness and the mission to survive by absorbing the threat's biomass. After defeating the mantis and completing the mission, Mason acquires a new evolution ability called 'Sunder.' As he begins to understand the system’s advantages, an unknown presence approaches silently, hinting at a new imminent danger.