When Elsa flees Arendelle, she meets a strange man with snow and ice powers just like hers. He determines to help her embrace her newfound freedom, but a dark force stands in his way. As Elsa struggles with the fear and chaos raging inside her, Jack and the Guardians try to prevent Pitch from snuffing out the children's belief during the eternal winter.

"Elsa... you don't have to hide it around me." Fun and invisible Winter spirit Jack Frost comes across conflicted and isolated Elsa of Arendelle, and all chaos ensues. Haunting pasts, ominous enemies, looming danger, and a dirty secret stands in the way of every chance of these two distrustful souls ever finding unexpected warmth within the bitter cold they have grown so used to.

Jack was the only friend Elsa ever had growing up. Although marked as an imaginary friend, he never failed to accompany her on the loneliest of days. Elsa was the first person to ever see Jack, and he didn't care if she was the last. It was enough. This story reveals a lot of what 'Frozen' never explained. When in doubt...blame Frost.