Fireproof Keller has always kept in mind the advice his predecessors left him at work: "Never let your companions fall behind you". But in his family life, when it came time to cool off marital quarrels and conflicts, Keller embraced his own set of principles. When they just experienced the seventh year of their married life, Keller and his wife Catherine both affirmed what Catherine had said, and hoped that they would never get married this time. Katherine, a public relations director at a local hospital, and her husband couldn't understand the pressures of each other's work. Amid the day-to-day bickering over work, money and household chores, both of them had to admit that the marriage had come to an end.
As the couple set about their divorce, Keller's father had to reconcile their differences by convincing his son to try taking Katherine to a book-based event called "Challenging Love." A forty-day trial trip. After reading the book of the same name as the experiment, Keller began to try to understand what unconditional love is. But is it too late for this Fireproof to save his marriage, his job is to save other people's lives, and now he is facing the hardest job of his life, which is to go save his wife's heart
.
