There’s a long history of films that take place in quaint UK or Irish villages full of quirky characters brought together by something that interrupts their otherwise ordinary lives. “Dream Horse” (2021) strides boldly within that lane like an even-money favorite. Based on a true story, Toni Collette plays a Welsh woman who decides on a whim to purchase and breed a racehorse. A syndicate of townsfolk is formed to pay for the upbringing of the resulting foal. Scrappy underdog hijinks ensue. Some of the characters are cliche and some of the drama is melo, but it’ll warm your heart.