2035: In the shadow of a race-course, two sisters grow up, helping their mother at the local cafe that serves renowned ramen. Family life is fractious especially when one of them loses their day-job to an automaton. When the sisters discover their beloved race-horse Today is being sent to the knacker's yard after a lifetime of over-racing, they are determined to rescue her. To remind Today of happier times, they hatch a plan to let her run one last race. But it will be no ordinary event. They will train her to run the slowest race of her life.