Living in a war-torn environment, three resistance fighters who are also best friends sworn to overthrow the tyrant in order to restore their homeland’s independence.

I think there's a strong idea here but the stakes need to be higher and the goal a little more personal. Perhaps the three resistance fighters could be trapped in the war-torn environment and the only way to get home is to help overthrow the tyrant (helping the people get their freedom could be something they come to do within the script). Also, something I've learned from being on here, you should probably have the logline focus on one character with the others mentioned briefly.