How do you know..?
Truth. There are countless variations of it – each of us sees things from a slightly different point of view, so even our perception of truth is always somewhat unique. So is it even possible to find the absolute “real truth”? Six characters try to answer this question after being metaphorically hit by a seventh character (possibly representing the author of the play) with a cue which make them spread all across the stage like balls in a game of billiards.