In 1980, award-winning investigative journalist Lee Strobel (Mike Vogel) of the Chicago Tribune receives praise for his report on the Ford Pinto fires. One evening, while dining with his pregnant wife Leslie (Erika Christensen) and their young daughter Alison, an alarming incident occurs. Alison starts choking on a gumball, prompting a nearby nurse named Alfie (L. Scott Caldwell) to rush to her rescue. After successfully helping Alison, Alfie attributes the miracle to Jesus, mentioning a strong feeling that guided her to the restaurant that night.
As the evening unfolds, Alison's innocent question about Jesus sparks a debate between her parents. While Leslie wishes to let their daughter formulate her own beliefs, Lee dismissively claims that Jesus is just another story for children. Tensions arise in their marriage, but Leslie continues her quest for understanding and visits Alfie's church, which she finds profoundly moving. This experience prompts Lee to embark on a mission to utilize his investigative prowess to debunk Christianity, convinced it’s a mere hoax.
Lee consults Religion reporter Kenny London (Mike Pniewski), who enlightens him about the Christian belief resting on the resurrection of Jesus. Lee sets up a dedicated space in the Tribune's basement to gather concrete evidence against it. His skeptical journey leads him to interviews with several experts, including a leading authority who reveals that about five hundred individuals testified to seeing Jesus alive post-crucifixion.
Simultaneously, Lee finds himself involved in a different story concerning a shooting involving cop Joe Koblinsky ([unknown actor]), which enables him to delve deeper into police corruption while trying to navigate the moral quandaries of his investigation. A series of revelations leads Lee to confront various personal demons, including his troubled relationship with his father, Walter (Robert Forster), as he grapples with an overwhelming sense of anger and practical detachment toward faith and reality.
As Leslie embraces her newfound faith, the strain between her and Lee escalates. After a particularly tense night filled with accusations and heartbreak, Lee is hit with the profound realization of loss when he hears of his father’s passing. At the funeral, he discovers fleeting evidence of his father's love for him, sparking an introspective crisis. Lee's compelling journey leads him to reflect on his past indiscretions, ultimately culminating in an emotional encounter with James Dixon ([unknown actor]), who he discovers is being harmed in prison as a direct consequence of his reporting.
Facing the ultimate truth of his investigations, Lee comes to terms with his previously held beliefs. In a poignant dialogue with Leslie, he acknowledges the miracles he's witnessed and the undeniable evidence that has shifted his perspective, declaring, "Okay, God. You win." This pivotal moment boosts his determination to share his journey, transitioning his career from mere journalism to authorship.
As the story concludes, Lee writes a book titled The Case for Christ, which becomes a bestseller, and follows the fruitful literary footsteps of his children, who write their own Christian books. By embracing his faith, he transforms into a professor and inspirational speaker, sharing the profound story of his journey across various platforms.
