Space Sheriff Gavan

A giant tanker disappears, and the Japanese government receives a threatening letter from an organization calling itself Alpha. Alpha demands diamonds.

A suspicious old man takes away Wakaba and her siblings' goat, Mae. He has been working on the "Bem Project," a project to turn earth organisms into biological weapons.

The legendary "Majin Kabuto" is a helmet that makes the wearer invincible and allows him or her to gain power over the entire universe.

Dr. Joe Smith, a pacifist, is shot by a hunter-killer. Retsu becomes his bodyguard, where he learns of Makuu's plan to cause a world war and profit from arms trafficking.

Akira enrolls in the "Great Genius School," which brings together underachieving elementary students and helps them become smarter in a short period of time. But it's a trap.

Kumi, a girl who works at a flower shop, has a daily routine of delivering bouquets of roses to the bank. Makuu plans to rob the bank of the cash truck.

Makuu, plotting to frame Gavan as the villain, uses a UFO photo in a magazine to lure Retsu and the children out of the car.

Makuu targets the special bacterium Bacillus XO. Dr. Sugimoto, the developer of the bacterium, knew of the danger of the bacterium and hid it from the public.

Makuu plans to convert earthlings into cyborgs to create the "Human Crusher Squad". Retsu realizes what Makuu is up to and sneaks into the training facility.

Retsu receives an urgent incoming call. In the Earth region, only Hunter-Killer or his missing father, Boisser, could make this call.

Makuu is planning to build an invasion base at the Koyama Amusement Park and develop an earthquake generator to blackmail the Japanese government.

Makuu turns Double Man, who has been held captive for treason, against Gavan, but Gavan turns back and defeats him.

Retsu is unable to hold on to a draw against the Rhino-Dubler's overwhelming power. Director Qom gave Retsu special training.

The anniversary of the Beast Star Empire is approaching, and Makuu is about to offer Gavan's life as an offering to the gods.

Wakaba is in love with Saburo Amemiya, who transferred to her school. Meanwhile, Retsu notices Makuu stalking Saburo and learns that he is the son of Lake alien scientist Barnes.

Mimi falls in love at first sight with motorcycle policeman Daijoji Gou. Mimi introduces Retsu to Gou as her brother. However, Gou has been taken hostage by Makuu.

Kojiro and Touyama are visiting Lake Hamana, where they witness their daughter's kidnapping by a monster.

Retsu wants to duel with Dinosaue Dabbler. The Dinosaue Dabbler's power is beyond imagination, and Gavan's combat suit's energy device is destroyed.

Wakaba's friend Kazuhiro picks up a glowing purple stone, which is a demon fire meteorite that absorbs the oxygen around it when heated.