Leaving his home for a new life in a megapolis as a university student is a dream come true for Naoki (or Rina, if you have chosen to play the game as a girl).
However, the dream soon turned into a nightmare when earthshake strikes and destroyed the city, with Naoki/Rina trapped in a tunnel.
Survive the catastrophy with your wit, physical prowess and luck. Rescue other survivors trapped in the debris and run to find reinforcements, or any sort of help.
Battle a natural disaster and see why helping each other is so important. With the network facility of the handheld, ask a friend to cooperate with you on this action adventure.