The movie follows the story of Stacy Holt (played by Brittany Murphy), a young woman who works as an associate producer for a daytime talk show called “Kippie Kann Do!” Stacy becomes increasingly curious about her boyfriend Derek’s (played by Ron Livingston) past relationships, leading her to delve into his little black book, a collection of contacts and information about his ex-girlfriends.
As Stacy investigates Derek’s exes, she becomes consumed by jealousy and insecurity, fearing that she may not be the only woman in his life. With the help of her coworker Barb (played by Holly Hunter), Stacy embarks on a quest to uncover the truth about Derek’s romantic history and the secrets he may be hiding.
Along the way, Stacy’s search leads her to confront Derek’s ex-girlfriends, including Joyce (played by Julianne Nicholson), a beautiful and successful fashion designer, and Lulu Fritz (played by Josie Maran), a sexy and mysterious model. As Stacy delves deeper into their lives, she begins to question her own relationship with Derek and whether she truly knows him at all.
In the climax of the film, Stacy confronts Derek about his past and the secrets he has been keeping from her. Derek admits that he has made mistakes in his previous relationships but assures Stacy that he is committed to their relationship and wants to make things work. Stacy must decide whether to trust Derek and forgive him for his past indiscretions or walk away and start anew.
The film ends with Stacy reconciling with Derek and realizing that love requires trust, honesty, and communication. She learns to let go of her insecurities and embrace the uncertainties of relationships, knowing that the only way to find true happiness is to take a leap of faith and open her heart to love.
Overall, “Little Black Book” is a lighthearted and relatable romantic comedy that explores the complexities of modern relationships and the pitfalls of jealousy and mistrust. With its endearing characters, witty humor, and heartfelt moments, it offers an entertaining and insightful look at the ups and downs of love and dating in the digital age.