101-year-old Rose DeWitt Bukater tells the story of her life aboard the Titanic, 84 years later. A young Rose boards the ship with her mother and fiancé. Meanwhile, Jack Dawson and Fabrizio De Rossi win third-class tickets aboard the ship. Rose tells the whole story from Titanic's departure through to its death—on its first and last voyage—on April 15, 1912.

1912年4月10日，承载着民众万千希望的豪华游轮泰坦尼克号鸣着震耳欲聋的汽笛，由英国南安普顿驶向了大洋彼岸的纽约。头等舱内，美丽女孩罗丝（凯特·温丝莱特 Kate Winslet 饰）和她的母亲（弗兰西丝·费舍 Frances Fisher 饰）及未婚夫卡尔（比利·赞恩 Billy Zane 饰）相对而坐，可是罗丝从心底反感这样虚华无实的生活。绝望之际，她结识了不名一文的青年画家杰克（莱昂纳多·迪卡普里奥 Leonardo DiCaprio 饰）。杰克靠赌博赢得了下等舱的船票，他带着金丝雀一般的罗丝冲破樊笼，在底下层民众中间尽情享受人生的快乐。短短几日的相处，两人互生好感。然而横在他们中间的不仅有氏族阶层的坚固樊篱，更有一场史无前例的大灾难。罗丝和杰克那幼嫩的爱情之芽面临着生与死的严酷考验……
本片根据真实事件改编，是1997年《泰坦尼克号》的3D重制版本。

The story of the six Chinese survivors of the Titanic disaster was written out of history. In The Six, we learn how these remarkable men beat the odds to make it off the ship alive, only to be singled out for expulsion from the US within 24 hours of their arrival. We track down their descendants for the first time. And we trace their extraordinary journey from Southern China to becoming silent witnesses to one of the twentieth century’s most infamous and intriguing events.