Actually it’s fairly apparent now since they got rid of filler episodes with such gems as Gohan’s misadventures with a robot, or Vegeta and Nappa overthrowing an evil alien empire while rescuing the alien princess for the alien prince before blowing the whole planet to kingdom come (Seriously, what the hell was the point of this episode?), or even the HFIL sequence. Basically, next week’s episode will reach the same point that episode 18 of the US release ended on.
And frankly I’m not sad in the least that they got rid of all that. I just wish they’d Kai the original DB too (I’m pretty sure that DB was bogged down in filler too).
