The protagonist accidentally obtained the zoom-in and zoom-out system. In his previous life, he was betrayed by his brother and pushed down a high building. He was reborn and returned to the day when the system was chosen. Seeing through his brother's desire to be reborn, he took the initiative to choose the seemingly useless shrinking system, secretly hoarding supplies, building an exclusive safe house, and hiding himself in the apocalypse to be self-sufficient. And the younger brother who is obsessed with amplifying the system is bent on pleasing his sweetheart, but he is deeply entangled in interests in the torrent of the apocalypse. This time, the protagonist abandons his past obsessions, focuses on his own survival, witnesses the different destinies created by different choices, and finally survives at the end of the apocalypse.