After death what happens is exactly not known to us. We say what we have read in holy books. Some will take rebirth on the Earth, some will go to hell and some will go to heaven.
Scientifically speaking, when one dies the heart stops and all other activities of the body too stops. There is no soul or other things scientifically proven. But in case you are cultural and traditionally religious like we Indians, the soul may go to heaven or hell depending upon the 'karma' he has made in his life.
