Lost Warrior follows Al-Shabaab-regretter, Mohammed, who was recruited at a young age by the terrororganisation Al-Shabaab back in England. After finding out, what the terrororganisation was really about, he deserted Al-Shabaab and is now living underground in Mogadishu with no papers. He wants to escape Somalia and unite with his young wife and son back in England. Before Al-Sahaab finds him and kills him.