[This work is a derivative work based on the tokusatsu "Ultraman Nexus" setting. The characters and world view are all original.] In 2047, a huge alien entity called "Helia Efen" appeared from the Aokigahara Forest in Japan and wreaked havoc. Immediately afterwards, similar things called "Alien Beasts" appeared all over the world and attacked humans. In order to deal with and study this group of huge creatures of unknown origin, various countries have jointly established a global strategic federation and established a special handling force AAF to deal with such crises. Ten years later, when Yonghui Yingren, who had lost his past memory, was about to be eaten by a strange beast, a mysterious light appeared in front of him across time and space. Is this the hope of unraveling all the mysteries, or is it a giant hand dragging it into the abyss?