This is a decade-long journey into the heart of Catalonia’s struggle for self-determination. From 2015 to 2025, the documentary follows the rise of 'El procés' as tensions escalate on the streets, in parliament, and in everyday life. Featuring exclusive interviews with voices from both sides—pro–Spanish unity and pro-independence—the film reveals a conflict shaped not only by politics, but by deeply personal convictions. As Catalans face police crackdowns, political trials, and a nation divided, “Battle of Flags” offers British audiences a rare, balanced window into the human cost behind the headlines. This is the story of a people fighting for identity, dignity, and the right to be heard—where every flag raised carries the weight of the past and the promise of the future.