You've probably visited the city of Ca'eam at at least once in your life, whether or not you knew of it then. Ca'eam is a city that dreams, and each of these dreams is a different version of itself. Dreams of what could have been, what once was, what will— and will never— be. Each dream is as real as the Ca'eam you have visited— and dreams of the others, which, in turn, dream of one another.
You are also a dream, one who dreams of the great city as it dreams of you. These are as long or as short as you wish them to be— for within them, you traverse the many dreams of Ca'eam.