Voltron: Defender of the Universe

Season 1

Episode 20: Ghost Fleet from Another Planet

When Explorer lands on a newly discovered planet, they discover something very strange: a mysterious fleet of ships that keeps appearing and vanishing at various locations. The Voltron Force launches to pursue the "ghost fleet" while Explorer sits in a large lake. Commander Hawkins soon grows suspicious and believes the planet is hiding a dark secret. Could his suspicions possibly be correct?