Two bitter enemies. A freezing attic. A cursed storm that forces them together.

Tristan, the arrogant heir to the Cornwall estate, and Eleanor, his icy and calculating step-sister, have spent their entire lives despising each other. But when the catastrophic coastal storm shatters the manor's lower levels with freezing seawater, the two fierce rivals are forced to barricade themselves in the cramped, freezing attic to survive.

Stripped of their warm clothes and shivering under a single fur rug, the estate's dark magic strikes.

A burning fever completely rewrites their biology. Tristan's broad shoulders and masculine pride melt away, transforming him into a soft, voluptuous, highly sensitive woman. Eleanor, meanwhile, surges with raw testosterone, her skeletal frame expanding into a massive, heavily muscled, dominant man.

Trapped in the freezing dark, they try to maintain their bitter hatred. But the plummeting temperature forces their naked, newly transformed bodies together. The friction of their changed flesh and the overwhelming flood of alien hormones quickly override their spite. What begins as a desperate bid to share body heat devolves into a feral, aggressive, and completely unrestrained battle of dominance and lust.