In 1941, the Japanese Imperial Army invades Malaya. The battle hardened Japanese forces quickly push Commonwealth troops – English, Indians, Australians, Scots, Chinese and Malays – south towards the key British trading port of Singapore. General Yamashita prepares to assault the so-called ‘impregnable fortress’ igniting already simmering ethnic and political tensions in the colony. Australia, for the first time, finds itself directly threatened.