Programmer Shen Yuan wakes up in the zombie apocalypse and awakens the "garbage recycling system" - he can refine zombies, obtain memory fragments and strengthen crystal cores. However, he soon found himself wanted by Skyfire Base for being the "culprit of the doomsday". During his escape, he met the mysterious warrior Su Qing, and learned from memory fragments that the doomsday virus originated from a laboratory, and the person who pressed the start button was actually himself.
Shen Yuan gradually revealed the truth - he was not a clone, but the biological son of the original body Shen Yuan. In order to save the world eroded by the virus, the original body created a restart code and bound his son's memory to the system. In order to regain the password, careerist Han Mo pursues Shen Yuan and attempts to use the restart device to control the world.
In the end, Shen Yuan had a decisive battle with Han Mo at the observatory and killed him with the Doomsday Furnace. He activated the restart code to resurrect his sister Shen Lan's consciousness at the expense of half of his memory, and restored zombies around the world to their human form. The world has returned to light, but a strange crack appears on the horizon, and a new threat quietly arrives...
