[System + Doomsday Rebirth + IQ Micro Online + Try to Save My Sister]
Scarlet fog swept across the world, mutated creatures raged, and civilization collapsed within a week. When Lin Mo, an ordinary office worker, died tragically with his sister Lin Xi, he was accidentally bound to the "time rewind" system - every time he dies, he can go back 24 hours.
With the memory of death, Lin Mo restarted the doomsday again and again, from panic hoarding to precise layout, and gradually figured out the rules of the fog and the weaknesses of mutant creatures. He desperately saves his relatives and friends, but is repeatedly hit by the butterfly effect: the people he saves may turn against each other over resources, and good-faith intervention may lead to worse outcomes. Sister Lin Xi went from doubting to working together, and even more awakened the ability to perceive danger; survivors such as veteran Zhao and biologist Professor Zhang joined one after another to form an alliance struggling to survive.
When Lin Mo broke into the 701 underground laboratory, he discovered that the fog was the product of a man-made experiment out of control, and that the parent mutant would trigger a "saturation point" in a month and completely devour the world. Frequent use of the system led to energy depletion and blurred memory. He had to lead the team to break through the nest and activate the suppression device within the last few turns.
Trust and betrayal are intertwined, sacrifice and redemption go hand in hand. Lin Mo understands in countless death cycles: turning back is not to start over, but to learn to hold on to humanity and hope in desperate situations. Finally, when the fog dissipated, he stood in front of the rebuilt base, knowing that real survival had just begun.