We’re living in a golden age of animation, and right now, there’s a terrific Prime Day special on for what is widely considered to be one of the finest animated series of all time. The Legend of Korra, a sequel series to Avatar: The Last Airbender, is on sale, and you can get the entire saga for just $57 (normally $98) in this Blu-ray box set.

• The Legend of Korra: Complete Edition (Steelbook Blu-ray) — $57 ($98)
• Avatar: The Last Airbender Complete Edition (Blu-ray) — $21 ($25)
• The Last Airbender and The Legend of Korra (Blu-ray) — $26.50 ($29)

That’s around 20 hours of content spread across several seasons, making for a pretty chunky story to enjoy in sharp high-definition. Originally meant to only run for a single season, The Legend of Korra was a critical hit after it first aired and it received three more seasons that helped flesh out the story of the new Avatar. Like its predecessor, the…