"The Switch" is a 2010 romantic comedy film directed by Josh Gordon and Will Speck. The story follows Wally Mars, played by Jason Bateman, who is a neurotic man struggling with his feelings for his best friend, Kassie Larson, portrayed by Jennifer Aniston. When Kassie decides to have a baby through artificial insemination, Wally's life takes an unexpected turn after he drunkenly switches the sperm sample with his own. Years later, Wally meets Kassie's son, Sebastian, and begins to form a bond with him. As Wally navigates his feelings for Kassie and his new role in Sebastian's life, he must confront his past choices and the consequences of his actions. The film explores themes of love, friendship, and the complexities of family dynamics.