Ice
 When Cassie Dasent was a little girl, her grandmother would tell her of what became to her mother: she was taken by a polar bear king to be the daughter of the North Wind, who expected the girl to become the bear's wife when she grows up. But one day, the North Wind's daughter meets Cassie's father and falls in love with him. When the polar bear king comes to get the woman, she refuses him but comes up with a bargain for him: if she has a daughter, the daughter will be his wife. He agrees and allows his would-be wife to marry the man she loves. The North Wind, furious at his adopted daughter, seeks her out, and when he finds her, she had given birth to a daughter (Cassie). Cassie's mother begs for her father to take her and leave her husband and child alone, and the North Wind blew her far away, where she was captured by trolls. Years later, Cassie is eighteen, and she has accepted the story as a nice way of saying her mother had died. She lives at the Eastern Beaufort Research Center in Alaska with her father and fellow researchers Owen, Scott, Liam, Jeremy, and pilot Max. While out on the ice, Cassie spots a large polar bear, but when she plans on tranquilizing and tagging him, he vanishes into the ice. Upon telling her father Laszlo of this, he decides that she must go to live with her grandmother in Fairbanks. It turns out the story about her mother was true after all. Determined to find the bear and prove the story isn't real, Cassie plans to go out after him, only to find that the bear had found her. He tells her to marry him in exchange for the release of her mother, who is alive. Cassie reluctantly agrees. The polar bear (who is referred to as "Bear") takes Cassie to his elaborate ice castle, where the latter learns that he is a "munaqsri," a transporter of souls. He is currently the only munaqsri for the polar bears, and tells Cassie that there must be more of their kind for everything to be in balance. That night, while Cassie is in bed, she is confronted by what she thinks is an intruder who tells her that he is Bear and adds that it is their wedding night. She chases him out, and upon finding out from Bear that the intruder was truly him, she finds out that they are to have children together. Though she initially plans on leaving, Cassie decides to stay, knowing that her father lied to her about her mother dying. Weeks later, the polar bear birth season arrives, and Cassie is left alone in the castle as Bear sets out with souls for the cubs. After a while Cassie grows bored and Bear allows her to visit her home again. Upon returning home, Cassie finally meets her mother Gail (short for Abigail), who is traumatized after all those years with the trolls. After spending only a few days there, Cassie returns to Bear with information on bear den sites she received from Owen. Also, she takes with her more gear than before, including birth control pills, which she uses on their wedding night. Despite this, Cassie winds up pregnant, realizing that Bear "magicked" her into becoming this (he referred to her use of the pills as a "chemical imbalance.") Feeling betrayed, Cassie waits until evening before turning on her flashlight and seeing his face. She discovers him in his human form, as a man with dark skin and white hair. Bear wakes up and sees what she is doing. He ends up having to be sent to marry the princess of the trolls; it was part of the bargain to release Cassie's mother (Cassie must also not see his face whatsoever). He leaves Cassie alone. Cassie is determined to go out after him, despite her pregnancy.