Eight-year-old Kahu craves her great-grandfather's love and attention. But he is focused on his duties as chief of a Maori tribe in Whangara, on the East Coast of New Zealand - a tribe that claims descent from the legendary 'whale rider'. In every generation since the whale rider, a male has inherited the title of chief. But now there is no male heir - there's only kahu. She should be the next in line for the title, but her great-grandfather is blinded by tradition and sees no use for a girl.