The world's largest ship, the Titanic, meets with disaster when it strikes an iceberg on its maiden voyage.
Cast: Ben Bishop, Glen Blackhall, Ruth Bradley, Dragos Bucur, David Calder, Jenna-Louise Coleman, Toby Jones, Will Keen, Maria Doyle Kennedy, Diana Kent, Antonio Magro, Lyndsey Marshal, Brian McCardie, Georgia McCutcheon, Peter McDonald, Noah Reid, Linus Roache, Lee Ross, Alex Sander, Geraldine Somerville, Steven Waddington, Perdita Weeks, James Wilby, Sophie Winkleman, Eszter Zakariás, Stephen Campbell Moore, Celia Imrie, Ralph Ineson, Peter Wight, Thomas Aldridge, Sally Bankes, Pandora Colin, Olivia Darnley, Joséphine de La Baume, David Eisner, Laurie Hagen, Ryan Hawley, Jonathan Howard, Mark Lewis Jones, Linda Kash, Christine Kavanagh, John Kazek, Grainne Keenan, Sylvestra Le Touzel, Joseph May, Simon Paisley Day, Miles Richardson, Sophie Rundle, Izabella Urbanowicz
The Titanic strikes the iceberg and panic follows. As the women and children get into the lifeboats, Georgiana and Harry enjoy the few remaining moments they have left together. Watson is given by Barnes a parting gift that will change her life for ever. Paolo attempts desperately to save his brother whilst Jim looks for his daughter. As the boat begins to sink, the following few hours will decide who will live and who will be lost forever.
Italian stoker Mario manages to get a job on the ship for his brother Paolo, who becomes smitten with cabin steward Annie. Watson is discovered by Barnes loitering in steerage. Mary ends up letting her guard down with Peter Lubov and her husband Jim isn't happy. After the ship hits the iceberg, the fear soon builds for the third-class passengers as some of them are behind locked gates.
The story goes back to the beginning at the Belfast shipyard where political strife is interfering with the ship's construction. The designer offers electrical engineer Jim Maloney steerage passage on the liner if he and his team manage to get the wiring finished on time. The following month as the passengers board the ship Jim meets a passenger who leaves his wife feeling unsettled. In second class, Muriel Batley resents her husband John's fawning to the Earl and admits that she knows a secret about his employer.
Different people from all walks of life join the White Star Line's new liner, The Titanic, for its first voyage to New York, they include aristocrats, holidaying celebrities and steerage passengers dreaming of a better life in America. Passengers include Hugh, Earl of Manton and his wife Louisa and uffragette daughter Georgiana. Also on board, in second class, are Irish lawyer John Batley, who works for Hugh, and his wife Muriel.