Erik runs a mystery box stall with his daughter, pricing from 10. Each box holds astonishing secrets. Stephani opens three: withered tree roots that cure her dying grandfather, blueprints resolving her family firm’s crisis, and more. These boxes reveal traces of immortal cultivation and demons, triggering a citywide frenzy. Possessing them means gaining supernatural power. After selling all 3,000 boxes, Erik and Stephani finally ascend together.