Zarkon is unaware if any progress has been made against the Space Explorers, so puts new energy into his Robeast for another onslaught, while Yurak continues his hunt so the victory will be through him. Pidge returns to the Castle of Lions with the help of some Arusians who know passages through they caves they inhabit, then learn that the other four have survived. With Allura and Coran, the Voltron Force hunts unsuccessfully for the key to the Black Lion until they discover that Allura's pet space-mice are responsible for its disappearance. Now they take all five Lions of Voltron out to meet the latest assault on Arus, led by the Robeast.
—brainybrailler@comcast.net