I was the only SSS-level healer in the last days, but I died on the day my teammates drained my energy to save Bai Yueguang. Three months before I was reborn in the apocalypse, I tore up the invitation to the salvation group and walked into the world's largest waste recycling bin. When everyone laughed at my self-destruction, I built the first energy purifier out of scrap metal. Later, zombies besieged the city, energy was exhausted, and the salvation team knelt outside the steel city I rebuilt. The captain who once drained my energy asked me with red eyes: "How can I save people?" I pointed at the man next to me who was called the "Despot of the Wasteland" and chuckled: "Introducing my new partner. I can save people in exchange for your superpower core."