The Lost Saucer

One summer night in modern-day Earth, a flying saucer lands outside the home of a young boy named Jerry, and his babysitter Alice; they are greeted by futuristic androids, Fi and Fum, who invite them inside their saucer for a brief tour. Suddenly, crowds begin to gather of neighbors, and police, and in a panic, Fi and Fum take off -- with Jerry and Alice still onboard... (Sid & Marty Krofft Wiki)