Kassie is a smart, fun-loving single woman who, despite her neurotic best friend Wallyâs objections, decides itâs time to have a baby â even if it means doing it herself⊠with a little help from a charming sperm donor. But, unbeknownst to her, Kassieâs plans go awry because of a last-minute switch that isnât discovered until seven years later⊠when Wally gets acquainted with Kassieâs cute, though slightly neurotic, son.