The trailer for Heart of Stone which documents the challenges of an inner city high school (Weequahic High School, Newark, NJ) and the workings of its devoted principal, ambitious Jewish and African American alumni, students, and even gang members to restore the school's safety and past glory.rnrnHeart of Stone follows the remarkable story of an inspirational principal who makes peace between a member of the Bloods and a member of the Crips through an unconventional conflict resolution program, as well as Weequahic High's involved alumni who provide college scholarships for students in need.