After weeks of traveling through Europe the immature William finds himself at a crossroads in Copenhagen. Not just another European city, Copenhagen is also the birthplace of his father. When the youthful Effy befriends the older William they set off on an adventure to find William's grandfather. Effy's mix of youthful exuberance and wisdom challenges William unlike any woman ever has. As the attraction builds and William truly connects with someone for the first time in his life, he must come to grips with destabilizing elements of his family's sordid past.

At the University of Wisconsin in Madison, Paige, a pre-med student and a farm girl from Manitowoc, meets Eddie, a fellow student from Denmark, whom she first dislikes but later accepts, likes, and loves. Paige takes Eddie to her home for the Thanksgiving weekend. Paparazzi find and photograph the couple, and Paige learns that Eddie is truly Crown Prince Edvard. Failing health causes King Haraald to abdicate in favor of Edvard, so Eddie returns to Copenhagen, then Paige follows her heart to Copenhagen, where Edvard warmly welcomes her, takes her to the castle, and introduces her to the royal family. Queen Rosalind first expresses opposition to Paige but later relents; King Haraald soon warms to her; Edvard proposes, Paige accepts, and he gives her a ring. However, Paige recalls her previous dream of going to Doctors Without Borders, so she breaks off and returns to school. Still, though, Edvard shows up at Paige's graduation and suggests an alternate plan.

Rie visits a tunnel-boring machine being used to construct the Copenhagen Metro. When an accident occurs, she must survive the claustrophobic conditions of an airlock with Ivo and Bharan whilst reconsidering their lives.

As a rebellious and motherless child, Ophelia is taken into Elsinore Castle by Queen Gertrude as one of her most trusted ladies-in-waiting. Soon enough, Ophelia captures the affections of the young Prince Hamlet. A passionate romance kindles between the 2 in secret as the kingdom is on the brink of war amidst its own political intrigue and betrayal. When Hamlet's father is murdered and the prince's wits begin to unravel into an insatiable quest for vengeance, Ophelia sharply navigates the rules of power in Denmark all while struggling to choose between her true love and her own life.