Christie Reynolds (Krakow) and Penny Miller (Frigon) have been archrivals ever since a memorable fight over a coveted Christmas recital solo in elementary school. Now adults, they work side-by-side at the same school where they still constantly compete over everything. As the holiday season approaches, the entire school is getting into the spirit with the annual fundraising festival, which will feature an exciting new event—a teacher Christmas Cookie Bake-Off, judged by a tough five-star chef, Chef Krueger (Thicke). Penny and Christie immediately clash over the contest, both wanting to beat the other to win the grand prize, a free class trip. Christie, however, is hopeless in the kitchen, despite help from her mom, Bev (Laura Soltis, "Hiccups"). She doesn't think she has a chance—until she meets James, a new student's handsome and sweet single dad. In addition to running a charitable shelter, James is also an excellent cook. As both Christie and Penny vie for James's attention in yet another aggressive battle, Christie starts to tutor his precious, kindhearted daughter Lily (Genae Charpentier, "Girl Vs. Monster") and gets to know James outside of school. As their relationship starts to deepen, and James' baking expertise guides Christie's cookie creations, Christie’s competitive edge starts to soften. But at the final bake-off challenge, James is finally caught in the middle of Christie and Penny’s petty feud, and Christie comes to realize life’s most rewarding prizes don’t come with a trophy.
Shop owner Alice Chapman (Alicia Witt) is nervous to meet her future in-laws at Christmas, especially because she is arriving ahead of her new fiancé, Will Mitchum (Scott Gibson). Alice's trip becomes more stressful when her luggage is lost and her phone is damaged, leaving her no way to find Will's family! As fate would have it, she meets her future brother-in-law, Matt Mitchum (Mark Wiebe), at baggage claim and is happy to get a ride home with him. As Alice meets Matt's doting family, mom Penny (Susan Hogan), dad Joe (Richard Fitzpatrick) and Grandpa Charles (Lawrence Dane), she falls in love with their festive holiday traditions and warm welcome to their home. And when unexpected romance comes calling as Christmas approaches, Alice must decide if her “Merry Mix-Up” will actually turn out to be her destiny.
