Land of the Giants

Dan and Fitzhugh avoid a SID trap, but Chipper is captured. Kobick advertises the "World's Smallest Dog" at a zoo, which lures in Barry, Valerie, and Fitzhugh to be captured. The rest go after them, hiding in the animal cages.

Dan and Steve make an attempted rescue, but are only able to grab a tranquilizer pellet. Dan is captured, and Steve grabs a porcupine quill hoping to make it into a dart to knock out the SID guard watching the prisoners. The zoo caretaker, Grotius, makes a deal with the remaining Earthlings: they give him the dog if he frees the others. He tries to betray them to Kobick. Taking advantage of the distraction, Steve and Mark free the others and take refuge in a leopard cage, then use the tranquilizer to knock out the leopard. The others run while Steve is cornered.

Mark and Dan manage to knock out the lights and drop a phone on the SID man trying to grab Steve, giving him time to get free. Kobick believes the whole thing was a set-up by Grotius and has him arrested, while expressing admiration at his ingenious prey.