1912. Lily is pregnant, travelling on the TITANIC with her husband, maid and doctor so that she can give birth near her beloved family in the United States. But her husband Henry is not the man he claims to be - and it dawns on Lily that she is more prisoner than passenger. When she meets widower Lawrence, she knows he's her final chance for help. But Lawrence is the only person aboard this unsinkable ship who already knows that he will not disembark in New York. Bereft without his beloved Cissy, he has decided to end his life. For the sake of his young son Alec, he intends to stage an apparently accidental fall overboard amidst the majestic icebergs of the North Atlantic. Can Lily and Lawrence help each other to safety, before it's too late?