Synopsis: Three astronauts face a desperate situation in this spellbinding science fiction cliffhanger. After completing a daring mission in space, the three-man spaceship Ironman One orbits earth preparing for re-entry. But a retro-rocket misfires, and the crew commander Jim Pruett (Richard Crenna), scientist/astronaut Clayton Stone (James Franciscus) and pilot Buzz Lloyd (Gene Hackman) are marooned in space, Back on Earth, Charles Keith (Gregory Peck), chief of the manned space program, and senior astronaut Ted Dougherty (David Janssen) plan an incredible rescue - while the whole world anxiously awaits.