When socialist barrister and aspiring member of parliament Maurice Blackburn met Doris Hordern, ardent feminist and campaign secretary to Vida Goldstein, neither had marriage in their imagined futures. But they fell in love - with each other as much as with their individual aspirations to change the world for the better. Theirs would be an exacting partnership as they held one another to the highest ideals. They worked as elected members of parliaments and community activists, influencing conscription laws, benefits for working men and women, atomic bomb tests, civil rights and Indigenous recognition. Together, they shook Australia.