Serangoon Road is a fast-paced detective drama series set against the exotic, tumultuous backdrop of 1960s Singapore. The series tells the story of Australian-born Sam Callaghan (Don Hany), whose childhood was spent in WWIIs Japanese internment camps and who returned to fight in the Malayan Emergency. He is a man deeply scarred by both these experiences. When his neighbour Patricia (Joan Chen) asks him to help keep her recently-murdered husband's private detective agency afloat, Sam is enticed into an unpredictable, dangerous world full of Chinese Secret Society gangs and political power play.