Man discovers that heavy metal music provided a soothing effect for his son Mason, who has cerebral palsy. Together, they have traveled across the United States to see 1,200 metal bands and even started a metal music festival that shares their passion.

Man discovers that heavy metal music provided a soothing effect for his son Mason, who has cerebral palsy. Together, they have traveled across the United States to see 1,200 metal bands and even started a metal music festival that shares their passion.