They both went on to study at the University of Montana — Ivy earning a degree in filmmaking and Ivan in social work. Years later, Ivan, now 34, and Ivy, 32, regularly collaborate on documentaries, one of which is set to premiere on Saturday at the Big Sky Film Fest. Narrated by Lily Gladstone, Bring Them Home is an 85-minute documentary following the Blackfeet Nation’s efforts to return buffalo to the reservation.