When GUTS-Select investigate mysterious disappearances, they learn it is work of an evil alien who intends to invade the Earth, called Professor Gibellus. However, just in time, a mysterious woman appears to help GUTS-Select.
Unfortunately the movie Ultraman Decker Finale: Journey to Beyond is not yet available on HBO Max.
| Directing | Masayoshi Takesue | Director |
| Writing | Toshizo Nemoto | Screenplay |
| Camera | Satoshi Murakawa | Director of Photography |
| Editing | Yōsuke Yafune | Editor |
| Sound | Hironobu Kageyama | Theme Song Performance |
| Sound | Kenichiro Suehiro | Original Music Composer |
| Sound | Masahiro Tokuda | Original Music Composer |
| Lighting | Atsushi Ogasawara | Lighting Director |
| Art | Taro Kiba | Art Direction |
| Crew | Daisuke Terai | Choreographer |
