Undo the End

The end of the world has happened and you maybe the only hope we have to undo it! At the very beginning a close friend of yours is dying and gives you a device that will allow you to travel back in time for a few split seconds when everything was peaceful and there was not any destruction like there is now. You must be careful with this power because you can carry items back in time with you and hurt innocent people. Sometimes you may have to do this to save yourself but it is a tough decision and a sacrifice you may have to make if you want to undo the end of the world.