The Red Light's Descent Unleashes the Apocalypse, Transforming Humanity into Monsters. Lü Yan, an ordinary salesman, unexpectedly bonds with an evolution system and forms a symbiotic pact with his SSS-level mutated boss, Ye Yanwan, who clings to humanity despite her monstrous form. Together, they assemble a team, rescue survivors, and fight against the greedy Dawn Council and the power-hungry Zhou Ling. In a world teeming with peril, they uphold justice, protect their companions, and jointly seek the truth of survival and the hope for humanity's endurance.