I believe that this song goes with the TV programme "The 4400":
If so, I think you might be having difficulty because the whole song has two meanings:
1. It is a straightforward love song.
2. It is describing the mysterious disappearance, and later reappearance, in time of the 4400 people in the TV programme.
1. The love version: Is basically saying, somewhere, sometime, whether it's even on another planet or place beyond the sun, we (the lovers), will find one another again. This ties in with the first part of the song...."so long ago.....etc, etc". which can be taken to mean a lover remembering a time when she was together with her partner.
2. The same words can also all be taken to refer to all the people who have gone missing. If you think about it from their perspective: "So long ago....", at time when the 4400 people were all in their ordinary lives before they disappeared. The chorus you posted, "We'll find our place......", is basically the longing of those missing people to find their way home, from wherever they have been taken.
Does that help?
Student or Learner