Each of the investigators receives the following letter:
May 31, 1925
An increasingly grave situation has arisen of which it is our belief that is threatening to the whole of mankind, if not a grat deal more. Our researchers here at Advanced Metaphysical and Parapsychological Research Studies (AMPRS), through the study of the "fabric" of space and the universe itself, have uncovered many startling facts. AMPRS has managed to electronically explore into alternate universes or dimensions. Through advancement and extrapolation on the previous work in the area by Hienrich Muller, Dr. Tolstoy Sadenitzen, and Dr. Simon Aurbach, AMPRS scientist Dr. Richard Hinthorn has developed a device which enables us to punch holes in the fabric of planes of existence. In the course of our experimentation, Dr. Hinthorn found the dimension dwelt in by the Great Old Ones. I realize what follows requires a great deal of blind faith to believe.
A terrible cosmic imbalance is about to occur; the dimension of the Ancient Ones has entirely filled with the power of the Ancient Ones allied with evil; virtually no "good" remains in that dimension. Apparently, this dimension has been this way for quite some time. The problem is that a dimensional rift has occured in the fabric of space in the dimension of the Great Old Ones and is on a collision course with a rift in our own dimension formed over Siberia at 7:17AM on June 17, 1908. When the two rifts superimpose, AMPRS top scientists speculate one of two things will happen: our dimensions will merge, forming a new plane of existence, or both dimensions will be instantly obliterated to avoid the imbalance of good and evil in the alternate dimensions.
Either of the two possible end results are bad, and it is doubtful that the human race could survive either situation. This letter is being sent to parapsychologists, mediums, and other investigators of the occult who have demonstrated their resourcefulness and experience. AMPRS asks your assistance, time and effort in helping us overcome this obstacle. We all have a great deal at stake.
Please contact our AMPRS center in Colorado.
Dr. Richard Hinthorn
Larry S. Wakewold
President of AMPRS
All of the investigators call Dr. Hinthorn, and agree to meet with him and his assistant at a remote hillside location. At the meeting, Hinthorn expands the explanation given in the letter. He likens the dimensions to two balloons, one filled with white ink, the other with black ink, each revolving slowly near its neighbor. There is a doorway in each dimension, like a hole on the surface of each balloon, which permits limited passage from one dimension to another. He explains that ordinarily these two doors are never aligned, thus, contact between dimensions is quite minimal, and there is little danger. But, he continues, the scientists have discovered that the doorways in the two dimensions are moving toward each other, and that soon they will align. When that happens, he explains, the white ink in our dimension will spill over into the black ink of the other, and vice versa, and both dimensions will be destroyed.
The scientists believe, however, that they have discovered a way to prevent disaster. They cannot alter the alignment of the dimensional doorways, but if they can inject a sufficient amount of white into the black dimension, it will prevent the unchecked intermixing of the two, and avoid annihilation.
He reveals a large and complicated looking machine not far away on a flat place on the hill. They have been conducting experiments, he reveals, in which they have successfully transported both inanimate objects and small living creatures into the other dimension. They have brought the objects and animals back intact. Well, mostly intact. It seems that time runs at a different rate in the other dimension. When they sent a rabbit into the other dimension for a few minutes, our time, they brought it back to discover it had starved to death: it had been gone for weeks, from its own point of view. Unfortunately, further experimentation revealed the time discrepancy to be random: there is no way to compensate for it.
Then he comes to the point. The time for experimentation is over. They need to transport a large amount of white into the black dimension: they need to transport a living human being. They are asking for someone in the group to volunteer to go.
There is much consternation amongst the investigators, and they turn to each other to discuss who should go. Some people are not willing, but most consider themselves candidates. The discussion is intense, verging on bitter. The men unanimously declare that the women should not be considered. In the end, the investigators willing to go draw straws. Wally Forsythe is chosen.
Even so, everyone is more than willing to give him a chance to back out. His sanity is frail, and he is among the oldest of the investigators present. Priscilla Darby, with whom Wally has investigated occult phenomena several times and whom he considers a personal friend, becomes unpleasant and tells him he is a fool to go. Go if you want, she says, but dont expect me to visit you in the insane asylum. Both Zeke Ford and Al Neville offer to take Wallys place, and everyone assures him that no one would think the less of him for backing out. After a long time of agonizing over the decision, and after lengthy discussion, Forsythe decides that he will be the one to go. Darby turns away, disgusted. Melanie Forrester fashions a small cross out of twigs and grass, which she gives to Forsythe for protection. Ford and Neville wish him well. He bids his friends an awkward goodbye.
Dr. Hinthorn escorts Forsythe to the transportation chamber of the interdimension machine, and Wally steps inside. While the remaining investigators watch from a place of safety at the top of the hill, Hinthorn and his assistant press buttons and throw switches, and the machine starts up. Within a few moments, Forsythe has been beamed into the dimension of the Old Ones.
Then something goes horribly wrong. The machine displays irregularities, and Hinthorns assistant starts to run away. Suddenly, the machine explodes, and Hinthorn is killed.
The investigators turn to the assistant, Johnny, for answers. He cannot explain what happened. He only knows that the transfer worked: disaster has been averted. But, without the machine, there is no way to bring Wally back. With Johnnys help, the investigators make an effort to determine if Wally has survived the process and is, indeed, in the other dimension. They use a ouija board and get a simple message: Bring Me Back.
The investigators pay a call on Laban Shrewsbury, a famous and mysterious former Miskatonic professor who wears dark glasses at all times. An investigator attempting to peek behind the dark glasses might get the idea that Shrewsbury has no eyes at all, a preposterous notion, given the fact that Shrewsbury shows every indication of being able to see.
They are greeted at Shrewsburys door by Klaus, the teutonic butler. He ushers them into the study, where Shrewsbury meets with them. After consulting arcane books and the like, Shrewsbury is able to give them a spell to perform which he believes will help them bring Wally back, if he is still alive. He suggests that they perform the spell in a place closely associated with Wally, since the added power will increase their chances of success.
The investigators choose a park called Little Tokyo, a Japanese garden of which Wally was fond. They go there late at night and perform the ritual provided by Shrewsbury. Unfortunately, they fail. Wally does not materialize as expected. Saddened by their loss, the investigators pile into their cars and begin to leave. Al Nevilles car turns up the driveway and heads for the main road.
As Zeke Ford turns on the headlights, he is startled by the figure of a man standing in the beams of light. It is Wally. He is completely disoriented and terrified. His clothes are ripped, and his eyes are filled with panic. Ford honks the horn of his car, and Al Neville returns. The investigators gather around, and attempt to calm Wally down. He is enduring bizarre withdrawal symptoms, and begins to convulse. He is loaded into the back of one of the cars and driven to a hospital.
The adventure ended in success. The investigators managed to avert cosmic destruction and bring their friend back to his own world. Unfortunately, as Priscilla Darby predicted, Wally Forsythe never recovered from the experience. After his initial hospital stay, he was committed to Pine Circle Sanitarium, where he spent the rest of his life. His career as an investigator ended with this game.