Future children live in Taipei, away from home to go to many places by boat must be action, often suddenly a heavy rain, it is necessary to go to the top floor refuge homes because of flooding after the children into the house, a second home flooded sorry, there is an elf appeared suddenly asked him: '? does not want to change the world. "so elf took him past Taipei, a small chamber, leave the chamber if successful, on behalf of changing the past, you can go back into the future. The future will have changed ......