Voltron: The Beast King Go-Lion Season 1 Episode 9

From Castle Gradam the GoLion team watch a group of Galra Imperial Fighters shoot down a small ship. Tsuyoshi Seido rushes out to the burning wreckage of the ship to find a young girl from Earth named Lisa badly injured but still alive. After being nursed back to health Lisa says she survived the nuclear war on Earth but was captured by the Galra Imperial Forces and brought to the Great Dark Nebula where she managed to escape. Akira Kogane voices his suspicions of Lisa to the GoLion team which enrages Tsuyoshi. However it is soon revealed that Lisa is a spy who is working with Honerva to destroy Castle Gradam and/or the GoLion Team.