It is 1885. After a decade spent fighting for Queen and Country across the globe, Colonel Ian Steele is enjoying the quiet life in the colony of New South Wales, reunited with his friend Conan Curry and watching over his children and numerous business enterprises.

But the British Empire's pursuits are ceaseless, and when the colony's soldiers are required to assist a campaign in Sudan, North Africa, Ian's son Lieutenant Josiah Steele heeds the call, despite an ultimatum from the love of his life, Marian.

Meanwhile, Ian's younger son Samuel is learning the family business in the Pacific islands with his friend and colleague Ling Lee. However, Lee has become embroiled in a scheme to smuggle guns for the Chinese, which sees the pair sailing directly into danger in Singapore.

As the reign of Queen Victoria draws to a close and new battles loom on several frontiers, the Steele family must face loss and heartbreak like never before.