Hawaiian Wedding Song
performed by Elvis Presley

McGarrett and team have their hands full fighting Wo Fat and protecting Governor Jameson, who is almost killed by a car bomb.

Roger receives news of his mother's death, and several members of his family attend the funeral, including estranged daughter Margaret, who attempts to mooch Roger into giving her husband's fridge business advertising. Peggy becomes increasingly dictatorial at her job in Cutler, Gleason and Chaough, and saves a Super Bowl ad from CGC from being pulled. Ken Cosgrove becomes suspicious of the intentions of mysterious brown-nosing junior accounts man Bob Benson. Betty visits Greenwich Village after she learns that a violin-prodigy friend of Sally's left for there after spending the holidays at the Francis household. Meanwhile, Don takes a Christmas vacation in Hawaii with Megan. Later, it is revealed Don is having an affair with neighbor Sylvia Rosen