As police uncover a far-right group behind a series of grisly murders sweeping Japan, a police officer and former ultra nationalist seeking redemption must go undercover to prevent his younger brother from going down the same wrong path.

Odie, as always thank you very much for your advice and input, always appreciated!

Best

Jim in Japan

There’s something to this, consider the following:
To keep from following two goals (police – group behind bars | far-right guy – rescue mission), two unconnected protags but one brother, I produced this.

Example:
“A former ultra-nationalist must rejoin a far-right group behind a series of grisly murders sweeping Japan in order to rescue his wayward younger brother”

You can up the stakes by adding a “before” element at the end e.g., before the police catch up to him.

Hope you find this constructive, make this yours, keep going!