The robot army mobilizes to search all over the globe for the dodgy Shin Dragon and Benkei's group also participates as an independent team. In Alaska, the group saves a base from the assault of an Invader, who however manages to infect most of the civilians who become a threat to the team. The Shin Shin Getter Robot resists monsters who have merged into a monstrous Nautiloid, but they risk defeat due to a monstrous and inhuman ploy that the creature puts in place to avoid being attacked. At the last moment, a mysterious black Getter Robot appears, ferociously tearing the Invader to pieces, before returning without a word to where he came from.