Ultraman S01E19 - Challenge from the Year 2020

People start disappearing because of a strange liquid and it's described in a novel: "Challenge from the Year 2020," written by a missing doctor. Professor Kanda insists it to be a true account via his invention, the X Channel Light Wave. Coming from the year 2020 through time-space, the Kemur, an alien race, seeks the organs of humans, transporting them via a catalyst liquid to their world.