Greenvoe, the tight-knit community on the Orcadian island of Hellya, has existed unchanged for generations. However, a sinister military/industrial project, Operation Black Star, requires the island for unspecified purposes and threatens the islanders' way of life. In this, his first novel (1972), George MacKay Brown recreates a week in the life of the island community as they come to terms with the destructiveness of Operation Black Star.