"I apologize for the disturbance outside. There is nothing I can do to stop the Guardian from doing what he does. It is his duty to protect the Gate and make certain that no one comes. It has been his duty since the dawn of time.
"I wish I could tell you where this place is," says the old man. "Alas, for I cannot. See, this very spot...is not exactly anywhere. It is the hub of all universes, the stop for all times. It's nowhere, and yet..." He then waves a hand over an orb sitting on a nearby pedestal.
Suddenly, the room darkens and what looks like a hologram hovers over the liquid portal. You see thousands of images in mere seconds, from lumbering reptilian beasts swiping at flying things, to medieval armies attacking each other head-on, to a dragonfly landing gracefully upon a leaf, to a man looking up at a darkening sky, to countless more worlds.
"...everywhere." He waves over the orb and the room returns to what it was. "This is also why you are here, here at the Gate of Limbonet. This is where you will help me, if you so choose. If you accept the call all creation will thank you. If you do not...if you do not, I understand." The old man sighs. "I may return you home...surely there must be someone I may count on...infinity cannot fail me." He looks at you. "If you choose to take up the ConQuest..."
He then takes out a small bag and empties it into the palm of his hand. Three marble-like spheres tumble out, each a different color: white, brown, and red. "As of now I have only three World-Orbs available. The rest are scattered amongst the dimensions. If you find those, other worlds will be opened to you."
There is a railway surrounding the Gate--the liquid portal--that is pocked with many holes that appear to fit these Orbs. The railway ends in a crescent with a pedestal in front of you. The old man places an Orb in a single hole in it. Immediately the room darkens once again...unseen winds whip around you as the Gate turns about into a slowly-revolving liquid tornado that matches the Orb's color. The old man removes the Orb; everything dies down to what it once was.
"If you so choose to take up the ConQuest, as I have said...here are three worlds available for your choosing."
Holding up the white Orb: "The World of Powers...where evil receives no mercy."
The brown Orb: "The Dimension of Duranghao...a relatively new world, but is still in need of saving."
The red Orb: "A Time of Lost Aspirations...it is some time back in the history of your own Earth. I have no idea when it is."
"These are the first of many destinies that your party will travel to. Will you heed the Call?"