A series of murders leads commander TRUJILLO to Santa Rosa de la Sal a town close to a salt mine, where he meets VÍCTOR ZEPEDA - a lonely teenager who works in his father funeral home and spends his free time making crude animated horror films - who's strange behavior seems to point at him as the culprit of the crimes.

Abner is trapped in the rough life of Mexico City. His escape? Boxing. Dr. Frank Irwin (Martin Sheen) and his son Jimmy, a pro boxer, come together to teach Abner that the heart fuels the punches we throw in life.