Based on a true-life story, a young boy signs on as a cabin boy to the ocean liner, the TITANIC. A part of his duties is to take care of the ship's cat, who he names 4-0-1, after the ship's construction number. Certain that she will bring good luck, he notices that she is nowhere to be found after the ship's trial run. He's got to find her-the TITANIC can't cast off without her lucky cat. Jim is faced with a decision that will affect the rest of his life. Young Jim Mulholland can't believe his good luck: He has signed on as a cabin boy to the world's finest ocean liner, the Titanic, and can't wait for the history-making voyage across the sea to America. As part of his duties Jim is in charge of the ship's cat, a beautiful tortoiseshell that also appears happy to be on board.