A secret formula that can cause plants and animals to expand a thousand-fold in size is stolen by a terrorist group. During a wild chase and shoot-out, the formula is lost. It's found by a little girl who accidently gives the formula to her pet snake. After the snake grows to an immense size, it follows and protects her. When the terrorists go after the girl, the snake begins destroying everything in its path.
Unfortunately the movie Thunder of Gigantic Serpent is not yet available on HBO Max.
| Directing | Lee Chiu | Director |
| Production | Betty Chan Kwai-Wa | Producer |
| Production | Joseph Lai San-Lun | Producer |
| Writing | Godfrey Ho | Screenplay |
| Camera | Raymond Chang | Director of Photography |
