Rena works as a respected ornithologist at Auckland Museum, but has a sense that there is something missing in her life. Is it the answer to the mystery of the moa, or the dreams of a lost artefact that haunt her? After growing up in a foster family, she rediscovers her roots when her childhood friend Rangi comes to visit, with the news that her last blood relative has died. Rena returns to her childhood tribe and the "Hinemoa" a trawler she has inherited.
She sets out on a journey to answer her questions about the moa, but instead discoves an ancient and magical tiki (pendant). After humankind kills the last moa, the wrath of a forgotten monster is unleashed. Suddenly Rena finds herself in a race against time to uncover the past and stop Papamanu, a fearsome taniwha.