I said to Mum that the sky-workers must have really good heads for heights, but she said, 'Either that, or they have a family to feed and will do anything for a job that pays.' It is 1932 and Sydney has hit hard times, but the construction of a bridge that will reach across the harbour is setting spirits soaring. Both Alice and Billy tell the story of building the spectacular Harbour Bridge which will link the north shore to the working class suburbs of the south and unify a separated city.