The matriarch is a woman of intelligence, wit, beauty and ruthlessness, and has become a mythical figure through her fight to repossess the land and sustain her people against the ravages wrought by the Pakeha. Priestess of the Ringatu faith, she has been virtually a law unto herself. In his search for the truth behind the legends surrounding the matriarch, his grandmother, Tama Mahana delves deeper and deeper into Maori history and lore to understand the mysterious sources of her power and ambition.

The Dream Swimmer continues the odyssey of Tama Mahana, grandson and heir to the matriarch, as he assumes the mantle of leadership and, with it, his grandmother's battles with the Pakeha. But at every step Tama is thwarted – by deception and intrigue, and by the woman whose destiny has intersected Riripeti's and his. She is the enigmatic Tiana, his mother, the woman of no account.