Richard Martin buys a gift, a new NDR-114 robot. The product is named Andrew by the youngest of the family's children. "Bicentennial Man" follows the life and times of Andrew, a robot purchased as a household appliance programmed to perform menial tasks. As Andrew begins to experience emotions and creative thought, the Martin family soon discovers they don't have an ordinary robot.
On July 2, a giant alien mothership enters orbit around Earth and deploys several dozen saucer-shaped 'destroyer' spacecraft that quickly lay waste to major cities around the planet. On July 3, the United States conducts a coordinated counterattack that fails. On July 4, a plan is devised to gain access to the interior of the alien mothership in space, in order to plant a nuclear missile.