I recently agreed to GM a small Pathfinder campaign with three players who are interested in playing as a group of Summoners. They have requested that, at the start of the campaign, we play out a scene where they all complete their first summoning and bond with their eidolon for the first time.
I would like to create an interesting scene for them but in my research I have come up with little information about how this initial summoning and bond between summoner and eidolon occurs. I have questions like, "Is it in the summoner's mind?" "Do they physically travel to a different plane?" "Would the summoning be dangerous or involve any fighting?"
I need advice for how and/or where is best for finding the answers to these questions. What resources are available that would help?