Before The Emergency (as the Irish call World War II), a ​determined British military technician became an Irish citizen to ​work on an advanced submarine detection system to protect ​the British naval base on ‘Doon Island’ (Bere Island, West Cork). ​However, when the island came under Irish control, he lost ​support. Isolated but undeterred, he acquired valuable ​knowledge about German submarine movements. Regrettably, ​during The Emergency, his crucial information went unnoticed. ​In a climate of indifference, his noble mission to safeguard the ​realm’s naval interests faced significant challenges, not least ​due to his new country’s perceived stance on neutrality