For the very driven medical student Caitlyn Winters, catching the bridal bouquet at a Christmas wedding has set off a chain reaction that she's sure is more curse than blessing. Not only has she fallen in love with family medicine resident Noah McIlroy, but an unexpected pregnancy threatens her well-laid plans for the future. It doesn't help that Noah -- with a whole lot of help from her O'Brien relatives -- is completely on board with the prospect of marriage and happily-ever-after.