As a practised cardiothoracic surgeon in the small town of Forks, Washington, (Y/n) knows precisely what it means to fall in love. She knows that the cheeks flush, the palms sweat, the pupils dilate and the heart races - all because of brain chemicals like dopamine, oxytocin and adrenaline. In the context of medical terms, (Y/n) is all clued up on what being in love is like. Until she begins to fall in love with Carlisle Cullen, the resident doctor at Forks General Hospital. And all of her theoretical knowledge is questioned when love is put into its most practical use...