More details & the official synopsis for Smallville: The Complete Ninth Season DVD & Blu-ray:

Synopsis:

Great planet, Earth is. So great that other survivors of Planet Krypton wouldn’t mind making it home and taking control. But fellow Kryptonian Clark Kent has a warning for Zod and his followers who cross the line, especially if they seek to enlist Lois Lane in their schemes: I will destroy you all! Hearts grow fonder (Clark & Lois) and dangers grow stronger (Clark vs. warriors of Zod) in this 21-Episode Season 9 Collection. Plus, unexpected characters from DC Comics lore add exciting new layers to the adventures of the man who will become Superman. Among them: the shape-shifting Wonder Twins, magical Zantanna, and Justice Society of America’s Dr. Fate, Hawkman and Stargirl. May justice prevail – and Earth survive!

Bonus Material:

• Unaired scenes
• Cast/Creator Commentaries on episodes “Idol” and “Kandor”

Two featurettes:

• “Kneel Before Zod” (an in-depth look at the dynamic criminal from Krypton, his origins in DC’s silver age, and his various appearances in more recent film, animation, and live-action television).
• “Justice for All” (a script-to-screen featurette in which we’ll meet with Smallville Creatives as they bring one of comic books’ iconic team of superheroes to television for the first time).

Details:

• DVD & Blu-ray Release Date: September 7th
• 6-Discs DVD and 4-Discs on Blu-ray
• Running Time: 1012 minutes
• Subtitles: Spanish, French Portuguese, Chinese and Thai on the DVD and are in Spanish, French and Portuguese on the Blu-ray.
• Format: Video is widescreen, with high-def 1080p resolution on the BD version. Audio options are identical on both versions with English Dolby Surround 5.1 and Portuguese Stereo soundtracks.

SOURCE: TVShowsOnDVD