system
Given the following post, respond as if you're commenting on Reddit:
human
[Dragon Ball Z] How is the original timeline SUPPOSED to end?

We know things happened the way they did because of time travel shenanigans, but let’s ix-nay all the time travel. 

The Androids kill Gohan and Trunks leaving them able to roam free until that timeline’s Cell wakes up, absorbs them, obtains his perfect form, and probably destroys the planet afterwards which means that Buu is probably never awakened unless his little stasis thing survives the explosion. So where do things go from here?
gpt
Realistically if Cell becomes too much of a problem the Gods will deal with him, hes a universe level threat. 

But... more likely what happens is some young scrapper either human or an alien trains his McGuffin to challenge cell, whole arc takes a season or two, lots of yelling and montages of things lost etc before our new hero taps into super ultra mega god ki-chi and summons the souls of Earths mightiest heroes into a final attack that just barely works.