I actually had a character start in a campaign with a similar backstory, The party was fighting the Big Evil after it had opened a vortex to the negative energy plane, so as our characters fought we were losing levels. As the backstory went at the end my character used a wish spell to end the threat, but our party had all died in the process. In the future the Big Evil had returned so a wizard used some type of spell to bring back the heroes who had defeated him before, but due to the negative energy at our final battle we all came back at first level, and without any equipment. Our memories were quite fuzzy and though we felt familar with each other none of us knew any specifics about the other characters.
It was a great start but the DMs life(school, work and a new girlfriend) got in the way and the campaign only lasted a few sessions.
It was a great start but the DMs life(school, work and a new girlfriend) got in the way and the campaign only lasted a few sessions.