The Interstellar Crusade
The desert was widespread. Was the space-time shift successful? Tomoe Musashi with a helicopter unit appears in front of Ark, and an insect army appears shortly after confirming the situation. Takuma and his colleagues understand that they were sent in the midst of the "The Interstellar Crusade". Takuma and his friends can't hide their confusion in Musashi's extremely cold-blooded behavior. Takuma and his friends invited to Musashi's mothership are informed of the terrifying history of the universe brought about by the evolution of Getter. Musashi launches indiscriminate artillery to uncover the Andromeda-style hiding forces. Shaking off the hesitation, Takuma and his friends drive the arc.
Aired 05/09/2021EP 10 - The Interstellar Crusade

Getter Robo Arc
The world is on the brink of apocalypse following an onslaught of invaders. To fight the attacking hoard, one of the original Getter Robo pilots, Hayato Jin, has finished Getter Arc, a new fighting unit based on the final work and ultimate masterpiece of Professor Saotome. Now the son of Ryouma – one of Hayato's copilots on the first-generation Getter – Takuma, the half-human half-Saurian Kamui, and Baku, younger brother of the extraordinary ESPer Tahir, step aboard the Getter Arc to combat the ruthless incursion and restore hope to their ravaged world!
(Source: Sentai Filmworks)