凯勒(柯克·卡梅隆 Kirk Cameron 饰)是一名消防员,凯瑟琳(Erin Bethea 饰)是医院的公关主任,尽管在各自的职业领域里叱咤风云,但两人都无法否认的是,是他们的冲动和不成熟导致了两人之间感情的破灭和婚姻的破裂。在经历过了无数次激烈的正常和令人沮丧的冷战后,离婚成为了两人唯一的选择。 目睹年轻人们为感情所困苦,约翰(Harris Malcom 饰)决定不再坐视不管。他劝说儿子约翰,带着凯瑟琳参加名为“挑战爱情”的为期四十天的旅程,将其作为修复夫妻之间感情的最后努力。没想到,正是在这段看似无望的旅程中,凯勒明白了自己所犯下的过错,他决定要挽回凯瑟琳对自己的爱和信任,然而,面对去意已决的凯瑟琳,凯勒的挽留能够奏效吗?In Albany, the marriage of Caleb and Catherine Holt is in crisis and they decide to divorce. However, Caleb's father, John, proposes that his son delays their separation process for forty days and follow a procedure called "The Love Dare" to make them love each other again.