Foolish is the heart that leaves itself open to falling in love. Reckless is the person who steps away from tradition to claim a life of their own. Irreplaceable is the moment one takes the risk. Penny Caffrey seems to make all the wrong choices in life. From the men she dates to her career path; most of what she does is either hidden from or frowned upon by her large Irish family. Seth Chevalier has been labeled a disappointment by his entire family. He has a good job at a large accounting firm that he devotes the majority of his time to. His is used to and comfortable living a solitary life. When her latest boyfriend, the drummer for a local band dumps her, Penny takes a step back to do some self-evaluation and decides to lay off of dating for a while. Even with an overbearing father, Seth is determined to be his own man and moves into an upscale apartment complex in an effort to prove he is successful. Seth's solitary life is thrown completely off track when he moves in next door to Penny and she decides they are going to be friends, whether he likes it or not.