The Indigo Disk, the sequel to The Teal Mask DLC for Pokémon Scarlet and Violet, invites Trainers to explore the vast and diverse Terarium, an underwater facility at Blueberry Academy. New biomes such as Savannah, Coastal, Canyon and Polar Regions await, each with unique Pokémon to discover. The prestigious BB League presents a new challenge, pitting trainers against the Elite Four in dual battles and unique trials to prove their mettle. The story continues to unravel the mysteries of Area Zero, drawing players deeper into this enigmatic location. Soar through the skies with your legendary Pokémon and see the world through their eyes with the Synchro Machine in this exciting expansion. Requires completion of both the base game and The Teal Mask DLC.
I really love all the Unova references in this. It ties the lore of the Dream World in BW to the main plot of Scarlet/Violet, stuff like the sons and daughters of Unova gym leaders being a part of BB academy, the Mecha Tyranitar poster in the unlockable "futuristic" redesign of the club room, etc. It won't happen but it really makes me want another Unova game but in the new open world gameplay format of PLA and SV. Anyways, actually a really great DLC and it made the expansion pass worth it.