Bernadette Fox (Cate Blanchett), an effervescent architect with a stunning face hidden behind oversized diva sunglasses, suddenly disappears just before embarking on a trip to Antarctica with her family. It will be up to her husband and daughter Bee to piece together with wit and patience the trail of emails, invoices, newspaper articles, and school circulars their mother left behind, ultimately uncovering the shocking secret Bernadette has been hiding for twenty years.