Ultraseven Ep1 "The Invisible Challenger,"

In Episode 1 of "Ultraseven," titled "The Invisible Challenger," the story follows the mysterious arrival of a new hero, Ultraseven, who comes to Earth to protect humanity from extraterrestrial threats. The episode begins with the members of the Ultra Guard, a special defense team, investigating reports of strange occurrences and sightings of unidentified flying objects.
As the investigation unfolds, the Ultra Guard encounters a powerful alien entity known as Alien Cool, who possesses the ability to turn invisible and manipulate the minds of humans. Alien Cool presents a formidable challenge to the Ultra Guard, as they struggle to combat an enemy they cannot see.