The book presents a description of Unua, one of two dialects of Unua-Pangkumu, an Oceanic language of Malakula Island, Vanuatu. Unua has about 700 speakers who are bilinguals using Unua in local interactions and using the national language, Bislama, non-locally, as well as in local public and religious settings.

The description is based on material collected in the field from speakers of different age-groups in the five Unua villages. The data corpus includes a substantial body of material: contemporary translations of the New Testament gospels; audio-recorded transcribed and glossed texts; and elicited material collected with a range of speakers. The analysis includes comparisons with other Malakula languages and is both of typological and historical-comparative interest. The data documentation is substantial and detailed.