All the World Gone Premise

So, as a project in one of my classes, we are writing short stories in specific genres. Mine is science fiction. I am very excited to write this story and have been planning it for a while, so here is the premise of my story called, "All the World Gone".

            Earth is in chaos. War has spread all over the world, causing uncountable deaths and unstable economies. The poor have gotten poorer and the rich haven't suffered a penny. The U.S. government is gone but one organization tries to maintain control, the U.S.S.C., United States Salvation Committee. They are planning something, something to rid the world of all evil and chaos. The Purge. They are setting loose a virus to wipe out all those who reek havoc on the world and to purify the earth. A cure has been developed by a man named Julian for the use of only the high status Americans to live on and resurrect the lost world. The cure however, does not work, leaving them on earth to die. The U.S.S.C was prepared for this, having sent out spaceships in search for a new home for an Exodus mission, an escape. They must escape to the planet of Janis, god of opportunity, and with the help of Julian's daughter Willa, they will be able to live and thrive there. They believe they are alone, but on Janis they will encounter creatures they never imagined, and make choices crucial to survival. But that's the question, isn't it? Will they be able to keep the human race from extinction?