In 1966, five infant children were kidnapped by an alien group known as the Alien Hunters for the Reconstructive Experiment Empire Mess, who wanted samples of humans from Earth to experiment on. The children were rescued by Mess' arch enemy, the Flash alien race, which took each one to a different planet of the Flash solar system for training. Each child was trained separately in a range of superpowers that will allow them to fight Mess, their bodies also adapted to the atmosphere of the Flash Solar System making them gain special abilities. When they finally return to Earth in 1986 to combat Mess, who is now trying to invade it, they use the opportunity to search for their birth parents.
Episode 1
Five young people formerly of Earth return to their home-world after 20 years after discovering its invasion by the Reconstructive Experiment Empire Mess.
Episode 2
The Flashman must assert their mission to protect their birth world after Mess creates a creature to turn their genetic creations giant.
Episode 3
Haunted by memories of his abduction, Jin becomes obsessed in stopping an alien hunter who has crash landed on Earth.
Episode 4
After a Beast Warrior makes Dai see everything upside-down, Mag decides to specially train Green Flash to overcome his problem.
Episode 5
Sara and Lou fight on their own in Nagoya against a Beast Warrior making machines come alive.
Episode 6
Jin desperately tries to fix his Flash Hawk when the bikes become key in stopping a Beast Warrior being used by Ley Nefel to cause chaos and destruction.
Episode 7
Facing a Beast Warrior with chameleon-like hiding abilities, Bun devises a unique strategy in order to help the team reveal their enemy.
Episode 8
A Mess plot to trap the Flashman in another dimension is disrupted by an eccentric scientist trying to travel back 20 years to discover the identity of his abducted child!
Episode 9
As the Flashman try to help Dr. Tokimura complete his time machine, Ley Nefel tries to manipulate the situation to gain it's energy source so nothing can stop The Jigen.
Episode 10
Dai's crush on a flower shop worker leads him into a trap as he is manipulated by a disguised Ley Nefel.
Episode 11
A newborn Beast Warrior created for Ley Galus imprints on Lou, making it think she is its mother.
Episode 12
Ley Wanda torments the Flashman with a sudden boost in power and drives Jin to the brink with the revelation of a trauma from his past.
Episode 13
Mess creates a monster able to replicate Jin's mind and fighting ability perfectly, and it may take a fight to death for Red Flash to stop it.
Episode 14
Bun tries to befriend a bad girl as they're targeted by Nefel in a scheme to rip the Flashman apart.
Episode 15
Alien Hunter leader Sir Cowler comes to Earth to assist Mess in dealing with the Flashman, forcing the team against a corner to the unthinkable...
Episode 16
With Flash King down, Cowler uses The Zukonda to shrink down and collect specimens of Earth humans for Mess, which ultimately includes Sara!
Episode 17
Jin's attempt to rescue a bus filled with children from an explosive Beast Warrior is disrupted by the arrival of a mysterious alien and his rampaging truck!
Episode 18
Ley Baraki's past and mission is revealed to the Flashman as Lee Keflen sends down Cowler to eliminate a mistake of Mess' past.
Episode 19
Baraki is dragged back to Mess and forced to work in stopping the Flashman, even as he tries to give the team one final warning from Hero Titan.
Episode 20
A psychic girl saves Dai from a Beast Warrior sucking up people to prevent Flash King's revival, making him believe she is his little sister.
Episode 21
Sara is mysteriously rescued from a two-headed Beast Warrior by a man who believes she is his little sister.
Episode 22
The Flashman respond to an S.O.S. from a space phoenix hiding on Namegawa Island from Mess, who wishes to gain its immortality genetics.
Episode 23
Sara and Lou obtain the horn of a Beast Warrior that has the power to grant their every wish.
Episode 24
Bun's attempt at a quiet summer vacation turns nightmarish when Cowler uses Ley Galus to create beachside horrors with the ghost of a defeated Beast Warrior.
Episode 25
Jin becomes trapped in a showdown with Wanda while investigating a Beast Warrior with a growing power his teammates must deal with on their own.
Episode 26
Lou and an investigative mother try to discover the secret behind a tasty pumpkin dish at a restaurant run by Mess.
Episode 27
Dai trains with an aspiring boxer whom Keflen targets for his strong genetics to defeat the Flashman.
Episode 28
Lie Köpflen upgrades Leh Gals with a fiery new power in order to prove his creation's continued need within Mess.
Episode 29
The Flashman deal simultaneously with Ley Wanda's new monsterous form, the sudden emergence of their warned weak point, and an accident that befalls their friend Doctor Tokimura!
Episode 30
The Flashman suffer through horrifying illusions of their abduction 20 years prior brought about by Ley Nefel's upgraded Monster Warrior form.
Episode 31
When the Flashman are suddenly unable to transform, they must turn to Doctor Tokimura to discover the reason behind the loss of their powers.
Episode 32
Mag's attempt to strengthen the Flashman's prisms leaves the team powerless when they shatter during combat with a Beast Warrior. Mag, in his attempt to help, is incapacitated.
Episode 33
Jin tries to help a boy regain confidence in his judo-champion father after he loses a fight with Wolk and Kilt.
Episode 34
Bun disappears after being poisoned and thrown into rural rapids by a Beast Warrior, where he is discovered by a lonely woman who had lost her son.
Episode 35
Sara and Lou must work together as a team in order to learn a piano piece which becomes crucial for stopping a Beast Warrior amplifying Wandala.
Episode 36
A boy falls for a Mess scheme of a slug that can create riches in order to buy a violin for a girl he likes.
Episode 37
A Beast Warrior sucking up ghost children for attacking humans leads to another encounter between Dai and the mysterious psychic girl, where the truth of her powers is revealed.
Episode 38
Cowler uses his strongest Beast Warrior to brainwash the Flashman into turning against and attack Jin.
Episode 39
Sara becomes tormented by Nefel after she uses a Beast Warrior to discover Yellow Flash's feelings of being a normal Earth girl.
Episode 40
Jin becomes captured and trapped within a Mess base where people are locked away to be mutated into Beast Warriors.
Episode 41
When a Beast Warrior transforms Dai back into a child, the Flashman bring in Setsuko Tokimura to help protect him.
Episode 42
Following a lead regarding their abduction, Sara investigates UFO data from 20 years ago as the Flashman face an electronic Beast Warrior.
Episode 43
Cowler finally stands up to Lee Keflen and Mess when his Alien Hunters become targeted by the latest Beast Warrior and his right-hand Bo Gardan arrives to assist him. Meanwhile, Bun helps three boys take care of an injured Alien Hunter.
Episode 44
Keflen abducts the remaining Alien Hunters to create a more powerful Deus Beast Warrior using Ra Deus' genetics, giving a new problem to the Flashman alongside a shocking discovery.
Episode 45
The Flashman discover more about the dangerous Anti-Flash Phenomenon as they work to save Doctor Tokimura from Cowler and face a Deus-enhanced Kilt.
Episode 46
As the horrifying consequences of the Anti-Flash Phenomenon take hold, the Flashman continue their search for Cowler to save Doctor Tokimura, even with a Deus-powered Nefel on their backs.
Episode 47
Ley Wanda uses his Deus upgrade to get ultimate revenge on Jin, while Sir Cowler's manipulations lead to him and Lee Keflen to learn the truth of Ra Deus.
Episode 48
The transformation of Cowler's partner Bo Gardan into a Deus Beast Warrior forces the hunter to launch an all-out assault on Ra Deus himself!
Episode 49
As the identity of the abducted Tokimura child is finally revealed, Lie Köpflen is forced to face the wrath of a revived Lah Deus as he tries to take over Mess.
Episode 50
The Flashmen's time is running out! Will they be able to destroy what remains of Mess before the Anti-Flash Phenomenon consumes them?
