One night, Sato, a salaryman living in an apartment complex, returns home drunk and is perplexed when his family and neighbors claim they don't know who he is. He attempts to call the Ultra Guard but is abducted mid-call.
The Ultra Guard, alerted by Sato's report, launches an investigation. Dan and Furuhashi discover that Alien Hook are systematically replacing residents and buildings every night, attempting to turn the apartment complex into an alien residential area.
Plot[]
Salaryman Sato is dropped off at his apartment complex after a night of drinking. He greets the night guard, who ignores him, and stumbled to his apartment, where his wife and child do not recognize him. He approaches several neighbors and the night guard, who all claim to not know who he is. Meanwhile, the Hawk-1 flies over the area to investigate a strange noise and Sato gets the idea to call the Ultra Guard for help when he sees the vehicle fly overhead.
Sato, mistaking the strange noise for a late night television broadcast, is abducted by several aliens mid-call. Furuhashi dismisses it as a drunk call after a domestic dispute, but is ordered by Kiriyama to investigate alongside Dan Moroboshi. The following morning, Dan and Furuhashi head to Sato's apartment complex, where his family and neighbors have been worried about his absence. Dan, having heard the strange noise on a recording of Sato's call, connects the two events. Kiriyama orders the two to return to the apartment complex in the evening to stake out for any suspicious activity.
That evening, Dan uses his special vision and sees the entire apartment complex swap with identical buildings that emerge from the ground. The two are suddenly attacked by an alien in disguise, who Dan shoots dead. Several more disguised aliens attack them, but they fend them off and escape into one of the apartment buildings. Dan looks through the walls and sees aliens living in the apartments, speculating that the real residents must have been placed underground during the switch. Sneaking down a manhole, they descend several flights of stairs and find the original buildings in a simulated, holographic environment. Dan concludes that the original residents must be in a hypnotic state and that the aliens are building their own residences on top of them. They enter one of the rooms underground and find an unconscious Sato in a glass enclosure. They free him but are confronted by the fake residents, who reveal themselves to be Alien Hook.
The aliens explain that as nocturnal beings, they have been slowly amassing weapons and ships in their fake apartment complex every evening and have been using the building as an invasion center. They initiate their plan and dozens of aliens emerge from their apartments to fly off in their spherical ships. Furuhashi attempts to stop them, but an alien paralyzes him and Sato with a gas attack. Dan uses the opportunity to transform into Ultraseven and places the unconscious Furuhashi and Sato somewhere safe before doing battle with three giant Alien Hook. The two wake up shortly after and Furuhashi radios HQ to warn them of the invasion, and the rest of the Ultra Guard fly out to fend off the ships in the Hawks 1 and 3. Ultraseven is nearly overwhelmed by the three Alien Hook, but he releases a surge of energy that incapacitates the aliens before he defeats them with his Wide Shot.
At dawn, the Ultra Guard return Sato to his restored apartment complex and laugh as he accidentally enters the wrong building. He hastily runs to the correct apartment to find his wife and son waiting for him, and the family waves off the UG as they drive back to base.
The final draft script of "The Invasion of 15,000 People".
In both the draft and final versions of the script, the title was "The Invasion of 15,000 People" (1万5千人の侵略, Ichiman Gozen'nin no Shinryaku).[1] It was later updated to the current title.
In the draft version, the humans disguised as Alien Hook wore "round glasses resembling sunglasses" to make them look strange. However, in the final version, they were depicted with blank expressions.
Noriyoshi Ikeya explained that due to budget constraints, the art team only created the head of Alien Hook, while costumes represented the body. The team decided to produce more heads, hoping that quantity would have the same visual impact. Although the heads could be mass-produced using molds, the cost of making additional costumes nearly equaled the expense of a monster suit.[2]
Akiji Kobayashi returns to the Ultraman Series in this episode. He previously appeared in Ultraman as Toshio Muramatsu.
The episode's residential scenes were filmed at the Maplaza Housing Complex in Aoba Ward, Yokohama.[3]