Dylan is a restless and troubled 14-year-old boy living in Clondalkin, a notorious district in West Dublin where there are more problems than prospects. Yet, some of the teenage boys there find a way out of drugs and trouble by becoming “urban cowboys” who illegally tame and ride wild horses. During a dark period in his life, Dylan becomes attached to a white mare he names after his recently-deceased mother. His grandparents, who are raising him, try to maintain discipline, but soon recognize what the animal means to their grandson.