Caralyn McCreigh has always believed in three things: that her father, Daniel, would never force her into marriage; that she could have a storybook romance with a man who sweeps her off her feet and a loving marriage like the one her parents share; and that Queen Isabella’s legendary lost treasure, Izzy’s Fortune, exists. When her father tells her that her marriage has been arranged, all her beliefs are shattered, and she does exactly as he hopes she will - embarks on a quest to find Izzy’s Fortune. She believes that if she finds the treasure, she’ll be able to buy herself out of a marriage to a man she doesn’t know or love. And who better to help her than Captain Trey, the infamous treasure hunter?

Tristan Youngblood, captain of the Adventurer and future Earl of Winterbourne, would much rather sail the oceans and search for lost treasure than settle down and take over the reigns of the Winterbourne estates. However, when he receives news that his future has been decided for him, he knows he has no choice. He has no qualms against marriage itself, except for what he witnessed in the misery of his parents' union. He does not desire the same for himself, so instead of rushing home to England to court his future wife, Tristan accepts Caralyn’s proposal and embarks on one last grand adventure to search for Izzy’s Fortune.