In middle age, fraternal twin brothers Peter Reynolds and Kyle Reynolds could not be more different. Divorced Peter is uptight by nature. He has come to the realization that he is unhappy with his life, he having not been with anyone since the divorce three years ago - his ex-wife Katherine, his college sweetheart, the only woman he's ever been with - he and his adolescent son Ethan having never gotten along, and beyond going into the profession in honor of the father he and Kyle never knew in he dying of colon cancer when they were babies, he not liking being a proctologist. Kyle, an ex-surfer, is a free spirit living in Hawaii, he living off the lucrative royalties in his image being used for a commercial Hawaiian barbecue sauce, this only the latest item in what seems to be his charmed, carefree life. Never married, Kyle is in his first ever serious relationship now in its sixth month with equally free spirit Kaylani. At their mother Helen Baxter's wedding - her first since their father's passing - Peter and Kyle discover by chance that the stories Helen told them about their father all these years were all lies in all the possible men that could have been their father, she not sure which, inappropriate as father figures. Peter is arguably more devastated by this news as it was on what he based his life. With what little Helen tells them, Peter and Kyle go on a quest to find their father, whoever he is. In the process, they go on a journey of discovery, not only about the list of men who could be their father, but also about their mother, their twin relationship, and themselves.