Christmas caroling is a Moody tradition that Sean Sr. does not take lightly. However, when an unexpected guest shows up to the Moody house, caroling takes a hilariously embarrassing turn. Then, Sean Jr. finally agrees to join Sean Sr.'s Moody Heating and AC business, but trouble ensues when a rival company infringes on their territory. Meanwhile, Bridget finds someone in whom to confide, while Dan struggles with the guilt of being interested in cousin Marco's girlfriend, Cora