A "red heat natural disaster" broke out around the world. The temperature suddenly rose by 70 degrees, cities turned into scorched earth, water sources dried up, and mutated organisms raged in the high temperature. Su Yan, a former fighting coach, rescued the injured mechanic Gu Yan when he was attacked by mutant beasts in the martial arts gym. Without a system or superpower, Su Yan relied on his high strength to kill ferocious beasts and protect the weak; Gu Yan relied on his mechanical knowledge to build a water purifier and modify weapons. Faced with a shortage of supplies, betrayal of humanity, and a surprise attack from a horde of beasts, the two went from suspicion to working together to fight their way out of the fiery apocalypse. They also uncovered the secrets behind natural disasters and vowed to protect the last piece of human pure land.
