After a gold depository is robbed of some gold bars. Steve and Oscar are investigating and Steve notices a huge footprint outside of the depository. Steve begins to remember when 1 of the aliens from the mountains who are with the group form the first Bigfoot episode show up and tell him what is going on. The good aliens ask for Steve's help to confront a group of their renegade aliens who plan to make a new earth base and take over the planet. After the renegade aliens who have control of Bigfoot send him to stop Steve he is severely injured. Jaime (Bionic Woman) sets
out to stop the aliens, Bigfoot, and to save Steve.