On a Gorgeous Night
Takuma, Baku and Kamui encounter ghosts who take them to the basement of the Saotome laboratory, where they will have a vision of the events dating back 19 years and that brought them to the current situation.
Aired 25/07/2021EP 4 - On a Gorgeous Night

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)