 Danny is happy his dad finally invited his ma Pat Kennedy on board to celebrate the kids birthday together, less about the endless naval lessons. The captain approves chief purser Will Sanders  application to be transferred to the cruiser line s flagship, so junior purser Donald Griswald, like the captain ex-U.S. Navy, is assigned to observe Sanders before succeeding to the post. Camille also gets a transfer to the Grand Princess, later even ship s doctor John Morgan, which rains on Danny s party parade. Donald s dry pragmatism is inappropriate on a fun cruise. Mother Pat asks Danny to return with her. Bar manager Paolo Kaire is furious that his father Manuel Kaire, who walked out on him aged ten and his mother, is on board and refuses to get to know him, even after a talk with Doctor John Morgan; explaining to Danny parents are just people makes him reconsider. Passengers Charles and Doreen didn t fit in a singles group, but get on together great, till kissing drives her away because of the padded flat chest she came to test out; when she has the courage to show him, he divulges his own secret... Cruise Director Suzanne Zimmerman joins the leaving list. The captain learns Paolo s mother was the adulterer, but dad spared him that knowledge when she walked out on him, and tells Paolo... Seeing Danny happy on board makes his ma reconsider what s best for him... The transferees also have a surprise...