The Pacific Princess transports a wedding party to Alaska for the nuptials of the son of a wealthy heiress and the granddaughter of a fiercely independent oil man. The groom's old friend does her best to ensure that the wedding never happens. The groom's mother tries to hide the truth about her crumbling finances. Her estranged ex-husband shows up uninvited in the hopes of making amends with his son. He befriends Capt. Stubing. The best man tries to make a play for Julie; but she cannot stop thinking about her ex-flame Jack, who lives in Alaska. The bride's grandfather and the groom's wisecracking aunt take a liking to each other, but are reluctant to admit they are in love. Isaac becomes obsessed with learning trivia about Alaska. Gopher tries to hit on the bridesmaids.

Carol and Doug's wedding is threatened by Natalie's interference and the financial problems of Doug's mother. Peter hides the truth about his health as he tries to teach Alicia the importance of living each day to the fullest. Buddy and Portia impulsively decide to get married. Julie gets swept away by the romance of the cruise and decides to accept Jack's marriage proposal. She finds an unpleasant surprise when she goes to his house with her answer. Gopher still wants to make time with the bridesmaids, but Capt. Stubing and his job repeatedly get in the way.

On this Thanksgiving cruise, a father and his adopted son try to evade the boys biological father by escaping to Mexico; an older couple plan to travel with their daughter and her fiance who, unknown to them, is crippled; the smooth operation of the ship suffers as one by one the entire crew, after trading a bevy of insults, ends up not speaking with one another.