Delve into the inspirational story of one man’s journey from devastating tragedy to personal triumph. When his young son Daniel is murdered at Sandy Hook Elementary School, a grief-stricken Mark Barden, a world class guitarist, loses all joy in the music that had defined much of his life. But, in time, Mark rewires himself to become a powerful voice for change, becoming the co-founder of Sandy Hook Promise and a tireless advocate for gun violence prevention.