Ultraman Tiga & Ultraman Dyna: Warriors of the Star of Light was produced by Tsuburaya Productions in 1998 and was the only theatrical spinoff of the Ultraman Dyna TV series.
The members of Super-GUTS (Super Global Unlimited Task Squad) track a monster to the moon, where it battles Ultraman Dyna. This creature proves resilient to Dyna’s usual finishing moves (Solgent Ray). The next round of fight is very short because the monster abruptly vaporized in large yellow beam that unleashed from mysterious space-battleship.
Upon returning to Earth, the Super-GUTS team goes to a secret island base. Here they discover that TPC (Terrestrial Peacekeeping Commission), the organization they work for, is also responsible for building the space-battleship. The ship known as Prometheus, and its devastating main weapon is the Neo-Maxima Cannon. The project leader, Dr. Kisaragi, explains that Super-GUTS has been summoned so that their brainwaves can be used to program the battle computer of Prometheus, making it an even more effective weapon. The cocky young Asuka (Ultraman Dyna’s human alter ego) doubts that Prometheus can ever be as effective as Dyna at defending the Earth. He accepts the challenge, and his thoughts are fed into the ship’s computer.
When Asuka regains consciousness, the base is attacked! Asuka transforms into Ultraman Dyna to face the alien UFO. Prometheus is also launched, but to destroy Dyna, not assist him. Dr. Kisaragi announces that both she and Prometheus are under the control of the alien race known as the Monera. Prometheus, Mollusionized into Deathfacer, is able to anticipate and counter all of Dyna’s moves due its programing based on Asuka’s brain scan result. The one-sided battle ends when the Neo-Maxima Cannon devastates the island. Dyna disappears and is presumed dead.
While Super-GUTS regroups (they have all survived, including Asuka), the Monera announce that they will begin exterminating humanity at noon the next day. After talking with the original GUTS leader, Captain Iruma, Asuka regains his confidence & becomes Dyna-Strong type. This time, Dyna is ready for Deathfacer and shows the robot some devastating new tricks, as he defeats Deathfacer by driving his fist through Neo-Maxima Cannon when it does ‘pre-shoot charging sequence’. Dyna then throws unstable Deathfacer into the air, before it explodes. However, the Monera commit Harmonosion to form the gigantic Queen Monera which captures Dyna and instantly devastates the city…
You can buy the film HERE.