Ally D'Aplièse is about to compete in one of the most dangerous sailing races when she suddenly learns of the unexpected, mysterious death of her adoptive father. Rushing back to her childhood home to meet with her five sisters, she discovers that her father - the mysterious billionaire whom his daughters affectionately call Pa Salt - has left each of them a tantalizing clue to discover their true heritage.
Meanwhile, Ally has recently embarked on a deeply passionate love affair that will change her fate forever. Now, however, with her life turned upside down, she decides to leave the open sea races and follow the clue her father left her, which leads her to the icy but beautiful Norway...