Before leaving for war in Afghanistan, Shaun Black gives his little brother Trysten a mission of his own. Keep out of trouble. Trysten tries, but with Mum hitting the bottle harder than ever and his dad not helping, Trysten responds the only way he knows how, with his fists - getting into a fight at school and lining up for another one with his uncle who's come to stay. When the family receives news that Shaun will be home for Christmas, Trysten is sure that good times are coming. But when Shaun returns, Trysten soon realises he has a whole new mission - to keep Shaun out of trouble. Hey Brother tells the story of a tough kid from the bush whose world comes crashing down on his shoulders. But with his own blend of fury, resilience and deadpan humour, Trysten proves to be up for every challenge.