The spaceship Altares, with a photon drive capable of accelerating it to the speed of light, leaves an Earth-orbiting space station. The Altares crew, two families of scientific specialists, journeys at light speed with time-dilation to Alpha Centauri, where they launch several satellites to transmit information on the Centauri star system back to Earth and guide future manned vessels in exploring.

Although Harry and Lisa have a happy marriage, their sex life is rather boring. And it's not just the fact that Lisa is overly prudish. One day Harry collides with attractive Jessica, who works as a dominatrix, and a passionate affair between them ignites. Lisa begins to tempt their neighbors, Bill and Kiki. However, the situation suddenly escalates when a chance encounter with Lisa and Jessica when they shared a dinner bill.