Ultraseven S01 E16 The Eye That Shines in the Darkness

"A Powerful Fight Protects Earth From Invasion!"

After going missing for three months while en route to study the planet Annon, Cherry Blossom 9 suddenly reappears and initiates contact with the Terrestrial Defense Force. Landing near Mt. Hades, Moroboshi, Anne and Amagi are sent to investigate.