The World of Mist: Start with the Lucky Cube

Late at night, the city suddenly had a power outage, and a strange fog floated out of the sky and spread among the high-rise buildings. People who were touched by the mist fell into coma instantly, and then disappeared in the envelope of mist. Soon, the entire city fell and everyone was missing. In the early morning, the sun still rises as usual, but the beam cannot penetrate the fog...