One night, the city of California suddenly was attack from weird people from another planet. They started shooting fire bolls destroying every thing and killing everyone.
After that long and depressing night everything was destroyed, it wasn't a city anymore, nothing was left there not even people except for two teenagers that were siblings and could survive from the attack.
They had to run away from their place, looking for help. While in this journey they both had to go through difficults obstacles that could have killed them.