Cadillacs and Dinosaurs - Season 1 Episode 6 -

Jack and Hannah go to the Mall Market to trade. Hannah swipes a top secret file. Jack runs into a Mack and finds the river dried up. Hannah finds out the document is the property of Wilhelmina regarding an ancient laboratory. Jack finds the river has been dammed up so that Wilhelmina's men can excavate the lab. Hannah is caught but Jack assists her. Dr. Fessenden activates a deadly robot. The robot activates other robots becoming a threat even for Wilhelmina. The diggers destroy the lab. The robots have survived, but Jack destroys the dam to bury the dig site.