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.