In a devastated future, two footsoldiers fight each other in a twilight landscape. Suddenly, beams of light send them in the present time: 1964. One of them, Qarlo, appears in broad daylight, in the street of a big city and frightens the population. He's arrested by the police and locked up in an official asylum where one philologist watches, studies, establishes a communication and tames him. Later on, Qarlo is released and taken to the scientist's family home. Meanwhile, the other soldier is stalked between two times. Qarlo escapes from the home and is caught up while robbing a rifle store. Back home, alerted by the pet (Macbeth, the cat), he faces again his mortal enemy. By accident, the two warriors are desintegrated by a laser beam machine gun.
Returning home from a journey to Venus, astronaut Jeff Barton is welcomed and acclaimed as a national hero and must prepare the next stage of the space program: the colonization of Mars. But before obtaining any funds to launch the project, General Barton must meet the Senate Committee with a complete report. Unfortunately, his mental and physical health—his fingers are webbed—deteriorate gradually owing to his past assignment on Venus that his subconscious has hidden and repressed. A team of scientists and the support of his loving wife succeeds in healing him.
By accident, an alien being, named Eck from a two dimension world, breaks in ours and creates rifts and tensions and, only the people who wear spectacles fashioned by eye specialist doctor James Stone can see it but Eck takes them off to protect its privacy. Nevertheless, the doctor establishes a link with the being which asks a special lens to see the doorway to return home safe and avoid the destruction of the Earth.
In a University, Professor Roy Clinton experiments a prototype drug named CE on him to increase Mankind's brain capacity but it modifies permantly his complete genetic structure and splits his personality. Dr. Clinton turns out to be a superman criminal and compels his brother-in-law to absorb a dose to join in his master plan.
Trent, a man without any memory of his past, is desperately looking for the three missing fingers of his glass hand, a talking computer. The fingers are held by the fanatical Kyben: alien invaders from the future. He follows them to an office building, only to discover that the Kyben have lured him there so they can recover the glass hand. Trent is trapped with a cleaning lady, Consuelo, and is forced to play hide-and-seek to recover the remaining glass fingers and learn the truth about his identity and his mission.
The Thorn's, a couple on holiday looking for a farm to purchase, travels by car and stops at a gas station and witnesses the rushed escape of a car from a lonely country road. The couple follows this path and is suddenly stopped by rocks. The couple faces strange occurrences and is saved at the last minute by a farmer, Lamont, that leads them to his home in the dead of the night. The farmer confesses that he used to remain by sheer curiosity and now is scared by these unexplained phenomena that keeps him from running away. On their way to leave the place, the couple watches Lamont being crashed and killed by a rock. They go back to the farm to take refuge. Later, Lamont, now just a walking brainless body, steps into the farm; Andy Thorn, the husband, guesses that an alien intelligence is "inside" all these manifestations and makes contact with it. Unable to communicate, the alien force quits Earth and release the couple.
A first space expedition of two astronauts is launched to probe planet Mars and suddenly vanishes. Three years later, a new expedition of four men arrives on the Martian ground to discover that the original crew was killed by a gigantic blood-thirsty sand shark.
Professor Jonathan Meridith has built a miniature replica of a planet, from the distant solar system of Wolf 359, to study its evolution and calls it Dundee—the name of the financier. When the planet arrives at the present time, an evil entity comes out of the lab to punish the scientist. The wife of the professor is forced to destroy the planet to stop the being.
Adam Link, a robot, is arrested and accused for the murder of its creator. After a trial, the robot is found guilty and, on its way to be dismantled, it runs to save the life of a little girl and is crashed and torn up by the State truck.
On the Vietnam front, four soldiers are wounded and the hospital discovers unusual alien DNA-laden bullets in their brain that provide them with new intellectual ressources. The now civilian "soldiers" come together and each in his own field, is told to organize and build one element for an unknown project conceived as a holy mission. At Washington, Secretary of Science Randolph Branch and his assistant Adam Ballard, with the help of the Federal Bureau Security, investigate on these four men with strange behavior patterns to find out their true purpose.
Returning to his hotel room, the "lieutenant" Minns—the holy leader—faces the Feds and runs. Adam Ballard goes straight to a Wichita County's warehouse where he discovers the goal of the chosen ones: a starship has been built to send a group of six crippled children to an alien planet where the atmosphere heals them in order to repopulate a dying civilisation.
Living on the edge physicist Eric Plummer is unable to solve the two equations of his problem and decides to commit suicide by car when an alien scientist, in the backseat, suggests him not to do it. Back at his lab, Dr. Plummer meets Ikar, the alien, that offers him the following pact: to obtain the equations, the alien will give him parts of its intellect in exchange of a share of his human psyche—a skillful way to endoctrinate him. Ikar discovers a brand new realm thanks to Janet Lane, Plummer's girlfriend, that confuses and humanizes him whereas the doctor achieves a powerful weapon device. Soldiers from Ikar's planet come to take it back because it has betrayed its mission of conquest. Ikar runs, returns to the lab and give Dr. Plummer back his emotions. Finally, all aliens invaders as well as the device are destroyed.
In the first quarter of the XXIth Century, wealthy and corrupted space anthropologist Henderson James owns a forbidden and dangerous species: the Megasoid. The beast runs from its cage and hides in a zoo. Henderson James decides to make an illegal duplicate of himself to chase the monster. The look-like meets the wife of Henderson and understand each other very well because the clone displays the lost affection of the original man. Unfortunately, the real husband is killed by the creature and the human copy will die at midnight owing to a control poison in its bloodstream.
A group of six key persons are chosen to undergo an ordeal in a simulated space journey to the planet Antheon and to test their ability to cope with it. The unusual happens and the passengers meet a real alien being from outer space who obliges the greedy one of the group, Joe Dix, to push a special button to alert the authorities and put an end to the experiment.
Colonel Barham is a bitter disabled man with a terminal illness and that moves on a wheelchair which is selected to go on Mars but only his brain under the envelop of a robot will be aboard the ship. More frustrated than ever, the bodyless brain turns out to be megalomaniac and rebels against the Officials to rule. Armed with a rifle, the General in charge of the project shoots down and makes the brain's room explode.
Test pilot Jim Darcy flies a NASA's experimental supersonic jet that crosses a time portal at Mach 6 and crashlands near his base. Out of his cockpit, he realizes the whole world is frozen into time and only his wife and he are desynchronized. The couple goes to the base to alert and find a solution. They witness the possible death of their little daughter because of a future truck accident. After observing immobile officials and technicians in their functions, they encounter a strange man stuck into this no man's land for so long that his physical appearance has changed radically and prevents them from the danger they risk if they remain in this in-between realm. Fortunately, they not only save their child with their car's safety belts but return to the present.
En route to Tokyo during a violent storm, a cargo plane crash lands in the ocean and four passengers miraculously escape from death. They drift on a safety raft and enter a spaceship that is used to analyze and study alien civilizations. The four people avoid a mutated and growing microbe, except one, and finally try to communicate with the distant alien race owing to a computer. After being disinfected and studied, they're released. By chance, a plane rescue them. On board, they see the spaceship which goes back to its home place and self-destroys in the atmosphere.