in one sentence...
Four River Film Festival is a festival dedicated to high school film or, in other words, film made by youth (age group: 14 – 20).
where?
It is held, for the 12th year in a row, in Croatia in the city of four rivers named Karlovac.
when?
12th Four River Film Festival is going to be held from September 10th – 14th, 2019. The application deadline for submitting your films is June 1st, 2019.