Alli Deplessi is about to take part in one of the most dangerous yacht races in the world, but suddenly she receives news of the death of her adoptive father, Pa Salt. She rushes to her childhood home, where five of her sisters gather to open the will. It turns out that Pa Salt left each of them encrypted clues to the mystery of their birth. But are they ready to solve this riddle?
Alli’s story of her birth is strangely connected to the fate of singer Anna Landvik and the famous play “Peer Gynt,” written more than 150 years ago.
Alli travels to meet the icy beauty of Norway, where, as she believes, the mysteries are hidden not only of her origins, but also of Pa Salt’s identity—and of the seventh sister whom Pa Salt, at one time, was unable to find.