I won't open an America for you, but nobody knows that, different sources tell us different thing, I think there is two possible options: there will be nothing including us to state the fact that there is nothing, or our memory will vanish and we proceed to next level.
In my own opinion, this is the most rational and logical explanation if we base from our own theory without thinking of any other religious beliefs. If we really think about it deep enough with only our own perspective, we can conclude that the next thing after death is nothing, then after nothingness, we will forget everything and maybe become a new human. I wouldn't want to call it reincarnation because it is an entirely different person and human being. Maybe after dying we turn to nothingness, then the process repeats to the next generation. We exist but after death we are nonexistent.
