Sincline goes back to the Planet Amazon to re-conquer it bringing with him a Mecha Beastman Ypsilon. A group of orphans who lost parents in the battle form a resistance but are soon discovered by Honerva and are used as bait to lure GoLion to the planet. Kogane attempts a daring rescue of the children and somehow survives the booby-trapped blast through the mysterious power of GoLion!

After escaping Castle Galra, the team crash lands on the mysterious planet of Altea. Inside the ruins of a once beautiful castle, they find the last surviving occupants in former military strategist Raible and the beautiful Princess Fala. With guidance from the ghost of her deceased father King Raimon, the Princess believes these five strangers are destined to uncover the secret of “GoLion” an incredible weapon of defense and the last hope against the Galran Empire.

After challenging his own father to a duel for the throne, Sincline demands to be turned into a Beastman to defeat GoLion. Honerva tells them a new and improved armor coating she has created that will resist GoLion’s King Sword Jyuohken! Meanwhile, Altea launches an early warning satellite that quickly informs them of the impending Galra attack. With this new Beastman Lambda knowing all of GoLion’s weak points, will the team be able to survive?

Honverva plots to attack Altea on the thirteenth of the month as the GoLion team is enjoying a summer swim. Fala is disciplined for her choice of swimwear and is locked in her room during the battle only to be confronted by Sincline himself! When a giant Beastman named Kauman gets involved this will be a Friday the GoLion team will not forget!

Emporer Daibazaal has a secret new weapon being developed on the Planet Mura in the form of a massive cannon capable of destroying even GoLion! Moody and Kogane infiltrate the planet and attempt to sabotage the project but encounter a former slave with a vengeance against Altea!

The evil witch Honerva creates her deadliest Beastman yet with an added power of invisibility! The beast attacks Fala, Shorty, Hys and Fala in the forest as the group attempts to escape. Sincline raises the stakes when he grows the invisible into a monster size to take on GoLion itself!

In a show of rebuilding and reunification, the GoLion team helps construct a soccer stadium for the youths of Altea. Meanwhile, Honerva creates a Beastman able to control the massive construction machine the GoLion team is using to build the stadium with! Will they be able to destroy the Beastman without harming any of the children inside the stadium?

Emperor Daibazaal is impressed with a hot shot pilot of the Galra Air Force named Reggar who he recruits to pilot a Beastman against the GoLion team, hoping he may have the skills to outmaneuver the “Four Lion Head Attack”. After the initial attack by Reggar is successful, the GoLion team learns to beat Reggar at his own game by splitting apart the Lions but can they match this villain’s incredible speed?

An Earth girl names Lisa is rescued by the team after being shot down by the Galran forces. Lisa explains she escaped from Castle Galra which earns “Hothead” Tsuyoshi’s sympathies as he had a sister about her age. It is soon discovered that Lisa has psychic powers and is nothing but a saboteur for the evil Witch Honerva to destroy the Castle Gradam from the inside!

Princess Fala must choose one of the boys to reenact a celebration of the legend of a “love bridge” which connected the kingdom of Altea and Helena. “Hothead” gets the nod but the ceremony soon becomes a battle as Prince Sincline is determined to run the festivities with his Deathbeast “Galgo”. Will Princess Fala become another trophy in Prince Sincline’s harem?

A mysterious young man known as Saint rescues Princess Fala after her Lion crashes. Back at the Castle Gradam, Raible is convinced that Saint is indeed his long lost son who he had sent away years ago during an attack to the Planet Altea. But Saint is actually a resurrected agent of Galra and when he is left at the controls of Castle Gradam he keeps GoLion busy giving Sincline time to transport a powerful new weapon to Altea…

A captured Princess Amue is determined to escape from Sincline’s dungeon. With some help from the GoLion team she is able to but things get complicated when Honerva disguises herself as Amue which leads to a prisoner exchange with Princess Fala. It’s up to Kogane to brave a blizzard and take on Sincline himself!

A majestic white lion appears to Princess Fala in a dream when she intercepts as the spirit of her mother. When she follows this symbolic creature in real life she finds herself at the mercy of the with Honerva who transforms the lion into a Beastman named Lian which traps the rest of the team as well. Can Raible and Hys save the day inside the Blue Lion?

Honerva develops a Beastman she hopes is capable of repelling the “Four Head Lion Attack” named Omega Subgar. To distract the GoLion team, a wave of killer space frogs is unleashed on Altea terrorizing the people. The Lions must take on the frogs before facing the Beastman itself. Will the frogs croak or will GoLion choke?

Under the wicked advice of his mystical advisor Witch Honerva, the evil King Daibazaal sends a Deathblack Beastman monster to the planet of Altea to search for the missing Earthlings. But the team is ready to fight back as they search for the last key to the fifth robot lion of GoLion! Will they find the missing key before the Kingdom of Altea is wiped out once and for all?

With the return of GoLion, the universe once again has hope against the evil Galran Empire, but the residents cannot be convinced to join the resistance. Daibazaal sends a new and more powerful Beastman nicknamed “Death Hell” to destroy GoLion once and for all. The battle is on as Princess Fala joins the fight and transforms the decaying Castle Altea into the incredibly fortified Castle Gradam!

The GoLion team defies Raible and returns to Earth only to find it a shell of its former self and hours away from total destruction. Prince Sincline attacks them on Earth and almost succeeds only to be thwarted by Princess Fala. After the destruction of Earth and a battle with Beastman Batolda, Fala encourages them to think of the Planet Altea as their new home.

Planet Jarre is the latest planet to be inspired by the return of GoLion but their signal is intercepted by Galra and Honerva sends an evil doppelganger of GoLion to the planet instead. With the help of some children, the real GoLion is warned of the trap but soon a battle between two GoLion robots is on! Only through Kogane’s revelation that the evil GoLion is using computer calculations is the group able to out-think Honvera’s duplicate GoLion as they vow to keep fighting until all planets are free!

In the future, Earth has been ravaged by nuclear war. Survivors are captured by an evil alien race of the Galran Empire led by the ruthless King Daibazaal to work as slaves or fight in a deadly arena. Five captured Earthlings: the fearless Captain Akira “Chief” Kogane, the silent Takashi “Quiet” Shirogane, the strong Tsuyoshi “Hothead” Seidou, the reckless Isamu “Moody” Kurogane and the small but crafty Hiroshi “Shorty” Suzuishi, will attempt to escape the dungeons of Castle Galra before they are again forced to fight in the arena or worse, turned into massive Beastmen monsters.

A dashing visitor known as Bambara shows up and impresses all but “Moody” Kurogane. The team considers giving him a chance to pilot Blue Lion but when a cobra attack in the night is blamed on King Daibazaal, no one suspects it could originate from this mysterious new stranger whose Galran roots are soon to be revealed…

A deadly rain of blood soaks the Alteans who panic at this apocalyptic symbol as it triggers a river of flames which the lions of GoLion must extinguish. This leads to a hostage stand-off situation where “Shorty” enlists the help of a village child to fool General Sadak and rescue the rest of the team who must battle a giant Deathbeast known as Guirus.

An earthquake on Altea reveals a legendary hidden castle which Shorty is sent inside to investigate where he finds some frightened local children. When Honerva’s cat Jaga is spotted inside the group realizes it’s all a trap! It’s up to Kogane and the rest of the GoLion team to stop Honerva and take down the Beastman!

A pack of evil alien rats are sent to Castle Gradam to destroy it from the inside. It’s up to Fala’s mice to help save the day but the problems go from small to large when the evil rats combine to form a Beastman known as Catgun! Can the mice help save the day and win some cheese in the process?

On the Planet Meduse, Honerva discovers a race of Gorgons who are able to turn enemies into stone by looking at them. Thinking this would make an excellent Beastman, they kidnap a female Gorgon and force her to fight the GoLion team. Instead the Gorgon takes Shorty and treats him as her own child due to his size. An enraged Sincline sends a backup Beastman to destroy the GoLion team and their new Gorgon ally as well!

Princess Amue is saved from the pit by Ryou Shirogane who is the brother of original Blue Lion pilot Takashi “Quiet” Shirogane. Upon learning of his brother’s fate, Ryou swears revenge against the Galra Empire and contacts Planet Altea informing Castle Gradam of the rescue of Amue. Honverva attempts to lure Amue out from hiding by torturing her people but instead they sacrifice themselves so she can escape. Once back on Planet Herecles the real battle will begin as Sincline uses a Beastman known as “Goddess of Hell” to battle GoLion!