The Ultraman: S1 E8 - The Secret Of Hikari The Ultraman
Hikari encounters monster Mikonos while investigating an unidentified flying object, then transforms into Joneus and drives it away. Later, a TV station receives some film that was shot of the battle. The rest of the film depicts "Ultraman's Secret." Hikari tracks down the man who delivered the film, and it turns out to be a trap set by Space Ninja Alien Baltan.