Hmmm possibly a different world? OH! how about we all just meet at Milliways, The restaurant at the end of the universe which includes time and matter, for breakfast and all our characters end up sitting at the same table because why not.
Cue chatting, watching the ending of the universe, food being served and all that usual restaurant stuff. Also meeting Benjamin Franklin. And then the adventure begins!

or another idea we start running for our lives on some sort of dangerous world where we're most likely going to die. I vote the Attack on Titan world, ho wants to become delicious?