"Mickey's Once Upon a Christmas" features three main stories that celebrate the spirit of Christmas: 1. **Donald Duck: Stuck on Christmas** - Donald's nephews, Huey, Dewey, and Louie, wish it could be Christmas every day, leading to unexpected consequences. 2. **Mickey and Minnie's Gift of the Magi** - Mickey and Minnie each sacrifice their prized possessions to buy gifts for one another, highlighting the true meaning of giving. 3. **Goofy and Max's Christmas** - Goofy tries to teach Max the importance of Christmas traditions, with a humorous twist. These tales combine humor, heartwarming moments, and holiday lessons.

As of October 2023, "Mickey's Once Upon a Christmas" is not available on Netflix. Instead, it is typically found on Disney+, as it is a Disney production. Availability can change, so it's always a good idea to check the latest listings on streaming platforms.

Yes, "Mickey's Christmas Carol" is available on Disney+. It is a short film that features Mickey Mouse and friends in a retelling of Charles Dickens' classic "A Christmas Carol." The film includes beloved characters like Scrooge McDuck as Ebenezer Scrooge and Mickey as Bob Cratchit, making it a festive favorite for many families during the holiday season. You can easily find it by searching for the title on the Disney+ platform.

As of now, there are no official announcements or plans for a sequel titled "Mickey's Thrice Upon a Christmas." "Mickey's Once Upon a Christmas" is a beloved holiday special that features Mickey Mouse and friends in a series of heartwarming stories. While Disney occasionally revisits its classic characters in new projects, a third installment has not been confirmed. Keep an eye on Disney's announcements for any future holiday specials or projects featuring Mickey and his friends!