The film stars Toni Collette, Damian Lewis, Owen Teale, Joanna Page, Karl Johnson, Steffan Rhodri, Anthony O'Donnell, Nicholas Farrell, and Siân Phillips, and follows the true story of Dream Alliance, a horse that raced in the Welsh Grand National.

The film tells the true story of Dream Alliance, an unlikely race horse bred by Welsh barmaid and cashier Jan Vokes.

With very little money and no experience, she convinces her neighbours to chip in a bit each week to help raise Dream in the hopes he can compete with the racing elites.

Passing out flyers all over town, initially Jan's evening pitch meeting seems to be an epic fail, but they do get their 20-member syndicate formed.

When he wins the King Edward's Challenge, another breeder offers to buy Dream, which Jan, Brian and Howard disregard.

After hours of surgery, and days of rest and stem cell treatment Hobbs believes not only that the tendon is stronger than ever, but he could race in the upcoming Welsh Grand National.

It was announced in March 2019 that Euros Lyn was directing the film, with Toni Collette and Damian Lewis cast in the lead roles.

The site's critics consensus reads, "Spurred on by an excellent Toni Collette, Dream Horse has a comfortably crowd-pleasing gait that makes the most of the story's familiar formula.