A journalist named Phil Green is tasked with writing an article on anti-Semitism for a progressive magazine. To understand the subject deeply, he decides to pose as a Jew, adopting the identity of "Phil Greenberg." His new identity soon exposes him to the bigotry and prejudice that Jewish people face, affecting both his personal and professional life. Through various interactions and experiences, he begins to see how pervasive discrimination is, even among those who consider themselves enlightened.

Green’s fiancée, Kathy Lacey, supports his assignment but struggles with her own ingrained biases. The social scenarios they find themselves in reveal the subtle and often unspoken ways in which prejudice manifests. Green's venture not only challenges his own beliefs but also tests the moral fiber of those around him. Although he gains valuable insights, the emotional toll and ethical dilemmas he faces grow increasingly complex as the assignment progresses.