During a working-class adolescence in Rockford, IL, Chinese-American emigré Bing Liu turned to filmmaking, skateboarding, and his bond with board park buddies Keire Johnson and Zack Mulligan. In this remarkable, Academy Award-nominated directing bow, Liu offers up footage of the three stunting as kids-and sobering insights into the abusive upbringing all three knew-as well as the challenges his friends face in keeping that trauma from impacting their adult lives.