Three years ago, a strange gray fog swept through Cangnan City, annihilating millions of lives. Only seven people survived, and young Lin Ye was one of them. Three years later, Lin Ye, who was deeply troubled by reality, mistakenly broke into a mysterious mental hospital called "Hospice Sanatorium" hidden in the market. Little did he know that this was a fateful journey that had been destined for a long time, and it was also the beginning of his entry into the extraordinary world.
