A climate scientist and the Celtic God of Summer meet at a bar and have a one-night stand. Sounds like the start of a joke, but for down-on-her-luck Sadie, it's reality. After being dumped by her situationship and her doctoral program, Sadie finds herself accidentally working for the sexy God of Summer, Oak, to end winter for good by defeating the Holly King. The only problem? Despite her determination to keep their relationship professional, her mythical boss and his roguish charm keep piquing her desire. To make things more complicated, her research proves that winter is necessary to the mortal world. Now, she faces the dilemma of choosing to help her boss or save her world. As pressure and sexual tensions mount, Sadie must decide how far she will go to secure her own destiny back on Earth. Still, she becomes more entangled with Oak and his search for salvation, willing to risk it all to liberate the soul she can't help but fall for. How will her research lead to the redemption that Oak so desperately needs? Only fickle Fate has that answer, and it might push Sadie past the point of no return.