For a century, the United States of America and Australia have fought side by side in every major conflict. It’s one of the longest alliances in modern history. This friendship, forged in battle, shaped also by long exchanges of ideas, people and trade, is a fascinating story of trust, difference, loyalty and respect: what Australians would call mateship. Told via the present tense journey of renowned journalist Mike Munro to key people and places in the US-Australian story, the documentary is a buddy movie revealing how each generation remakes the partnership in new ways. Through personal stories, it charts a remarkable history across 100 years of sweeping change.