A female alien meets the Robinsons and use them to help erect an arch to bring her people to colonized their planet.
Did You Know?
Dr. Smith's extreme caution with handling the sculpture made of plastic explosive was unnecessary. Plastic explosives are notoriously stable until the proper detonation is applied. Compounds such as C-4 can be handled, molded, formed, dropped and even exposed to flame and set on fire without exploding. The value of plastic explosives lies in the very fact that it takes a deliberate act of detonation to set them off. See more