In the year 1999, a team of UN scientists in an attempt to tap into a new energy resource on a deserted island called Samsara, unknownigly open a portal to another universe, unleashing dormant biomechanical entities. Three years later, Takuya Goroza returns to the island of Sansara urged by a mysterious request by college chum Haruka Alford. Little does he know, his old friend isn't what he appears to be...
Unfortunately the movie Demon of Steel: Battle of the Great Demon Beasts is not yet available on HBO Max.
| Visual Effects | Naoyuki Onda | Character Designer |
| Writing | Sho Aikawa | Original Story |
| Directing | Toshiki Hirano | Director |
| Writing | Noboru Aikawa | Screenplay |
| Sound | Masahiro Kawasaki | Original Music Composer |
