The Prime Minister and I tells the story of the relationship between a new and passionate reporter, Nam Da-jeong, and the newly appointed Prime Minister, Kwon Ryul, from misunderstandings to rumors to real marriage. Lee Beom-soo plays Kwon Ryul, who lost his wife and lives with his three children. Although he has a high social reputation, he is a 0-point father. Yoona plays Nam Da-jeong, who did not love Kwon Ryul at first but married him for the position of Prime Minister and became the new mother of the family. The story unfolds in the process of the birth of the new mother. The production team said that please look forward to the miraculous love story of Lee Beom-soo and Yoona CP this winter. This is a warm fairy-tale-like romantic comedy that can be watched with the family.