Ultraman: S1 E22 - Overthrow The Surface
Hayata, who was assigned to a special mission, departed the base in Jet VTOL along with Anne who was dispatched from the headquarters in Paris. Immediately after that, the communication network was disturbed in a wide range of Tokyo and they went missing. Hayata awoke at the hideout of the underground people who plan to invade the world. Underground people were planning to use Ultraman as their vanguard!