Who knew Advent calendars could be so much fun? It was going to be an interesting Christmas season anyways, as Molly Barrett looked forward to showing her housemate what Christmas in Carter's Cove was like. Especially since the CrossCat had never celebrated Christmas before. But when her ex-boyfriend returns unexpectedly, and Molly starts getting mysterious cards with Christmas carols from someone calling themself "SA," the season takes a turn she never expected.