It features the voices of Vanessa Hudgens, Kimiko Glenn, James Marsden, Sofia Carson, Liza Koshy, Ken Jeong, Elizabeth Perkins, Jane Krakowski, Phil LaMarr, and Michael McKean.

Years later, Sunny continuously tries to change the minds of the other earth ponies, disrupting a showcase of anti-pegasi and unicorn technology by factory owner Phyllis Cloverleaf.

Hitch Trailblazer, Sunny's childhood friend and sheriff of Maretime Bay, pulls her away and prepares to send her back home with the warning that she is jeopardizing their friendship with her activities.

While most of the earth ponies flee, Sunny befriends Izzy and quickly takes her to her home to hide from Hitch and his deputy Sprout, Phyllis' son.

Learning from Izzy that unicorns have lost their magic and that the pegasi may be to blame, Sunny travels with her to the pegasus city of Zephyr Heights in order to ask for their help.

Sprout names himself sheriff and eventually becomes a dictator-like leader, turning the residents of Maretime Bay into a hostile mob and commandeering his mother's factory to construct a war machine.

Sunny and Izzy are caught in Zephyr Heights and taken to meet Queen Haven and her two daughters, Pipp Petals and Zipp Storm, who seem to be the only pegasi who can fly.

The lead voice actresses from My Little Pony: Friendship Is Magic television series – Tara Strong as Twilight Sparkle, Ashleigh Ball as Rainbow Dash and Applejack, Andrea Libman as Fluttershy and Pinkie Pie, and Tabitha St. Germain as Rarity – briefly reprise their roles in the film's opening scene.

[15] On February 12, 2021, it was reported that the founder of Boulder Media, Robert Cullen, along with José Ucha would serve as directors, with Mark Fattibene set to co-direct the film.

[10] On June 30, 2021, Vanessa Hudgens, Kimiko Glenn, James Marsden, Sofia Carson, Liza Koshy, Jane Krakowski, Ken Jeong, Phil LaMarr, and Michael McKean were revealed to be the film's main cast.

[19][full citation needed] Ultimately, however, she did reprise her role alongside fellow Friendship Is Magic/Pony Life cast members Andrea Libman, Ashleigh Ball, and Tabitha St. Germain for the film's prologue; and would continue to do so in My Little Pony: Make Your Mark.

[23] A tie-in video game titled My Little Pony: A Maretime Bay Adventure was released for Microsoft Windows, Nintendo Switch, PlayStation 4, and Xbox One on May 27, 2022, and for Google Stadia on June 28, 2022.

In Australia, Treehouse TV in Canada, TV2 in Hungary, Nova Cinema in Czech Republic, Nickelodeon in the Philippines, Channel 5 in Singapore, TVP ABC in Poland, Gulli in France and Boomerang in Italy.

She praised the film for "[retaining] its predecessors' lively, spirited drive centered on friendship, empowerment and magic," though was critical of some plot aspects.

[10] Beatrice Loayza of The New York Times gave an overall mixed review of the film, mainly criticizing the switch from traditional animation to "creepily-anthropomorphized, digitally-animated brethren"; she compared some plot points to Raya and the Last Dragon, which was released earlier in the year.

"[39] Prior to the film's release, during the 2021 Hasbro Investor Event in February that year, the company announced three untitled projects tied to the fifth incarnation of the toyline (also referred to as the fifth generation or "G5"[41]) as part of their My Little Pony content slate for 2022—an animated web series and two Netflix specials.

[43] Jenna Warren, Maitreyi Ramakrishnan, Ana Sani, AJ Bridel, and J.J. Gerber were revealed as the voice cast for the "Mane 5"—the characters of Sunny Starscout, Zipp Storm, Izzy Moonbow, Pipp Petals, and Hitch Trailblazer—in all four projects.

[44] Developed by Gillian Berrow (who also served as an animation writer and literary author on the Equestria Girls franchise and Friendship Is Magic television series) and co-produced by the Canadian animation studio Atomic Cartoons and Entertainment One, My Little Pony: Make Your Mark debuted with the special "Make Your Mark" on May 26, 2022,[45][46] that served as set-up for the main eight-episode series which premiered on September 26, 2022, on Netflix.

[49] The series is produced by Malaysian animation studio Lil Critter Workshop, and is expected to consist of 70 episodes, with Gretchen Mallorie serving as story writer.