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It's all settled: Lucy (Lucille Ball) will be allowed to go along when Ricky (Desi Arnaz) and his band take their European tour, and so will Fred and Ethel Mertz (William Frawley, Vivian Vance), inasmuch as Fred has been temporarily appointed Ricky's manager. Alas, Lucy won't be able to get a passport until she produces her birth certificate -- which she can't. But there's good news from the passport officials: if Lucy can provide at least two people willing to verify that they've known her since birth, she can cut through the bureaucracy. However, the witnesses fall through, leaving Lucy no other option but to try to stow away on the Europe-bound ocean liner -- and this leads to the classic slapstick set piece wherein Lucy is locked in a steamer trunk.