After Viv's new vibrating mattress almost takes Lucy for a ride, they have to buy a new one. But before it arrives, Lucy and Viv have to spend the night in their sons bunk beds. With Viv's claustrophobia and Lucy not being able to get into the top bunk, this proves to be one hilarious episode.

In 2020, after the colonization of the moon, the spaceships Vega, Sirius and Capella are launched from Lunar Station 7. They are to explore Venus under the command of Professor Hartman, but an asteroid collides and explodes Capella. The leader ship Vega stays orbiting and sends the astronauts Kern and Sherman with the robot John to the surface of Venus, but they have problems with communication with Dr. Marsha Evans in Vega.