With a team of the world's foremost historic and marine experts as well as friend Bill Paxton, James Cameron embarks on an unscripted adventure back to the wreck of the Titanic where nearly 1,500 souls lost their lives almost a century ago.

Recounts the experiences of a middle-class family, the Alcántaras, during the last years of the rule of Francisco Franco and the beginning of the Spanish Transition to democracy.