Senior citizen, George Eldridge returns home after mysteriously disappearing two years before and vows revenge on the aliens who abducted him. Helen, his long suffering wife is dismayed when he begins to build a space ship in their back yard with the intention of returning to space to seek his revenge. What follows is a humorous and exciting adventure in space where the two seniors find themselves caught up in a war between two alien races and with the assistance of an ancient robot, must use all of their resources to outwit both sides and survive.