The story revolves around the simple lives of Caloy, his parents Lucas and Helen, and their sickly horse, Chalk. Their quiet family life will change however when Caloy's playmate, the son of the rich haciendero Miguel, falls off a horse and dies. Miguel, who will put the blame on Caloy, will hunt the child down. Caloy will flee with his loyal horse Chalk and will find refuge under Leon del Torro, a baranggay captain. The forces of good and evil will clash when a meteorite falls, breaks into two, and lands separately on Chalk and Miguel. Powered by the meteorite, Chalk will change from a sickly horse to a powerful stallion that can talk while Miguel will experience evil powers, fueled by his lust for revenge.