Unbridled Passion is a story of forbidden yet undeniable passion. Kelly Landon's life had been filled with trying to care for her ailing father, running a business and fitting in a college class once in a while. Caleb Montgomery offers a little distraction from her monotonous life by taking her to dinner or a movie occasionally. After her father's death, Kelly feels lost and unsure which direction to turn. When Caleb proposes and invites her to move in with his family on their horse farm in Kentucky, she warily accepts. With a proposed marriage in the distant future, spending time on the beautiful horse farm sounds like just what she needs. She is totally unprepared for the reaction she feels when she meets Caleb's brother, Cole Montgomery. The sparks between them are overwhelming. Before the passion explodes between them, Cole seeks to find the reason behind Caleb's unorthodox proposal. Will he be able to convince Kelly that he is the brother that she is meant to be with?