The film "The Rivals of Amziah King" (2025) is a crime thriller directed by Andrew Patterson, starring Matthew McConaughey as Amziah King. The story centers on Kateri, who loses her mother and leaves foster care, then reunites with her former foster parent Amziah King, who mentors her and helps her discover hidden skills to face a devastating situation and seek justice

. Regarding where to watch "The Rivals of Amziah King," as of now, it is not available for streaming or digital rental on any major platforms such as Netflix, Amazon Prime Video, or others. It had its world premiere at the 2025 South by Southwest Film & TV Festival on March 10, 2025, but the film has not yet been released for home viewing or streaming

. In summary:

• The movie is not currently available to watch online or on streaming services.
• It premiered at SXSW in March 2025.
• No official streaming or digital purchase options are available yet.
• You may want to check back later or sign up for notifications on platforms like JustWatch or Plex for updates on availability

If you want to see it, you might look for future theatrical releases or wait until it becomes available for streaming or digital purchase.