An extreme cold wave is about to arrive, and Shen Zhixia wakes up early with the memories of her past. With only twenty days left before the severe cold sweeps through the city, she resolutely refuses unreasonable guarantee requests, uses the old mushroom farm left by her father to transform a safe underground mushroom cellar, stores sufficient supplies, and makes thorough preparations for winter. The cold wave arrives as scheduled, plunging the city into a crisis of water and power outages. People who were once close send requests for help, but Shen Zhixia holds her ground and focuses on guarding her own safety. Through the drifting wind and snow, neighbors help each other in times of crisis. When the cold winter recedes, she lets go of past entanglements, restarts the mushroom farm, and rushes toward her own brand-new life.