After the zombie outbreak, Suisui, who lost her mother and was separated from her father, unexpectedly awakened a talking bear doll. To find her father and to survive, the girl and the bear embark on a journey with a mobile supermarket that can upgrade. Using crystal nuclei and gold and silver jewelry to fairly exchange for food, drinking water, and daily supplies, they travel through major bases, helping weary survivors feel the warmth of food and hope once again. Along the way, they encounter kindness and greed, and make many companions walking shoulder to shoulder, building trust in mutual help and jointly searching for a new life in the end times.