The bright blue light from the black rock

Solar flares and pole shifts have decimated humanity and the technology we worked so hard to build. The remaining survivors had to join the remaining hunter and gather who remained unaffected by the global catastrophe. The grandson of the city dweller Adam Shah has heard the tales passed down of a black rock which emitted blue light and had information which allegedly would solve all their problem. The shamans are concerned as they received a vision that if the decedent of the city dweller does succeed. Chaos along with death and destruction would follow