For the first time ever, a group of fee-paying adventurers travel to the bottom of the ocean hoping to explore the world's most famous wreck: the Titanic. Using an innovative submersible vehicle, the expedition hopes to gain new insights into deep sea biodiversity as well as visiting the wreck site. But technical hitches and equipment failure soon put the mission, and the explorers, in peril.

After descending for hours in pitch darkness, the fee-paying adventurers hoping to see the wreck of the Titanic finally reach the ocean floor. Debris from the famous ship starts to emerge. Just meters from the wreck site, the expedition’s submersible runs into trouble. Can the crew on the surface help to successfully maneuver the underwater craft or will the entire mission have to be abandoned?