The 'Grand Narrative' is considered to be an overarching story which pertains to the widely held perceptions of society - it explains and justifies the beliefs of that context. The subversion of this Grand Narrative results in the undercutting of the greater perspective and presenting it in an unusual manner. The Penelopiad is thus a subversion of Homer's narrative 'The Odyssey' and Atwood revamps his story in several ways.
The perspective in which the story is narrated has shifted from the phallocentric heroes of The Odyssey to the domestic personal perspective of Penelope and her maids. The reader is thus exposed to an alternate perspective which is seldom heard in both society and literature. Penelope refers to Homer's "official version" a "stick to beat other women with"