La vida de la doctora Briana Ortiz va cuesta abajo. Está a punto de oficializarse su divorcio, a su hermano se le acaba el tiempo para conseguir un donante y ese ascenso que tanto deseaba se lo va a llevar, casi seguro, ese doctor nuevo que al que no soporta. Sin embargo, justo cuando ella ya está preparada para diagnosticar un caso de odio a primera vista, Jacob Maddox le envía una carta. Una preciosa que demuestra que, en realidad, no es el diablo. Bri y Jacob continúan escribiéndose, y cuando él le hace a Briana el mejor regalo del mundo, un riñón para su hermano, ella no puede evitar preguntarse cómo va a evitar sucumbir a ese recién llegado callado y atractivo... especialmente cuando este le pide un favor que no puede rechazar.

Dr. Briana Ortiz's life is seriously flatlining. Her divorce is just about finalized, her brother's running out of time to find a kidney donor, and that promotion she wants? Oh, that's probably going to the new man-doctor who's already registering eighty-friggin'-seven on Briana's "pain in my ass" scale. But just when all systems are set to hate, Dr. Jacob Maddox completely flips the game...by sending Briana a letter. And it's a really good letter. Like the kind that proves that Jacob isn't actually Satan. Worse, he might be this fantastically funny and subversively likeable guy who's terrible at first impressions. Because suddenly he and Bri are exchanging letters, sharing lunch dates in her "sob closet," and discussing the merits of freakishly tiny horses. But when Jacob decides to give Briana the best gift imaginable--a kidney for her brother--she wonders just how she can resist this quietly sexy new doctor...especially when he calls in a favor she can't refuse.