In his past life, the engineer Lu Chen desperately repaired the shelter, but it became the place where his own brother locked him out. A blizzard left him to die in resentment. Opening his eyes again, he returned to fifteen days before the extreme cold and power outage. This time, he took the initiative to divide the family, take over the abandoned factory, repair the generator sets, prepare supplies, rebuild the heating, and fight for a path of survival with Qin Zhi and a group of factory workers. However, beyond natural disasters, human hearts are even harder to guard against. When past memories are no longer reliable, can he protect the people around him and turn the ruins into a real home?