In the last episode, Ivan Shark and his men found the secret passageway that Delores Perada used to make her get away. Today they walk through the dusty passage in pursuit of her. The passage seems to lead to a dead end, but where is Senorita Perada? is she stuck in the passageway, or did she get away?
Back in the cave where Patsy is exploring with Chuck and Senor Perada, they have been following an underground river. Suddenly they see light at the end of the tunnel where a waterfall comes out of the ridge. Pablo tries to warn them as he tells about an ancient Aztek temple in the jungle below. Chuck is now in terrible danger as he falls over the waterfall. What can Patsy and Pablo do to help him?