Titanic begins not at sea but in the drafting rooms and gantries of Harland & Wolff, the Belfast shipyard where she and her sister ship Olympic take shape. Dramatized reenactments follow the designers, engineers, and shipwrights who build her, set against labor unrest, political maneuvering, and the financial pressure to outbuild rival liners. The film gives particular attention to the Guarantee Group, eight men from Harland & Wolff selected as an honor to sail on Titanic's maiden voyage to handle any technical faults that arose. All eight go down with the ship after it strikes an iceberg. Rather than opening with the sinking, the film treats it as the endpoint of a longer story about ambition, craftsmanship, and the human cost hidden inside an engineering triumph. The focus stays on Belfast and the shipyard floor rather than the passengers or the wreck itself, tracing how the men who built the ship became bound to her fate.