 Martin creates a neuro cerebral stimulator to help him make up his mind about whether to go home in an unmanned rocket, or continue to stay on Earth with his new family, Tim. A lightning strike to the stimulator causes Martin to split into three: two decisive Martins on either extreme and an indecisive Martin. Once all three Martins come to a consensus on any issue, they will rejoin. While the three Martins talk, Tim tries to hide at least two of the Martins from Mrs. Brown and Mrs. Brown s doctor, who is called in after one of the Martin s hits his head. As the countdown to the rocket launch nears, Tim has to drive the three Martins to the base, however three physically identical Martins is a bit conspicuous. So Tim hides the Martins in a trunk and some bags, the bodies which are seen by the doctor, who calls in the police. Luckily for Tim, the three Martins join together before the police find the three bodies. Unluckily for Martin, the rocket launches before he makes up his mind.