In 2025, the quantum collapse disaster strikes, reality overlaps with the parallel universe, and the "Countdown to the End" is triggered every 10 days. Lu Chen, an ordinary college student, awakens to the "Doomsday Deduction System" and can consume his lifespan to enter the deduction space to preview the crisis. However, each deduction will split into countless "selves", and Lu Chen, who has devoured other universes, can survive - at the cost of reducing his actual life span by 100 days for every day he "lives".
