POV presents first-time filmmaker Bing Liu’s documentary Minding the Gap, a coming-of-age saga of three skateboarding friends in their Rust Belt hometown. While navigating a complex relationship between his camera and his friends, Bing explores the gap between fathers and sons, between discipline and domestic abuse and ultimately that precarious chasm between childhood and becoming an adult.

Watch it tonight at 9pm on WGBH 2.