Isabella is shocked when her parents book her passage on the brand-new ocean liner Titanic and inform her that she will be traveling by herself. She is given an envelope and told that the contents will explain everything, but she is forbidden from opening it until the boat reaches the United States.

Lucille is worried about her mother’s poor health, and her father is always distracted. Left to her own devices, she discovers some dangerous secrets that could tear her family apart.

Abby is desperate. She’s all her little brother has in the world, and their only hope is to start a new life in New York. But the only way to do that is to smuggle her little brother aboard the Titanic—and hope he can last the week without getting caught.

These three girls from different backgrounds, traveling in three different classes in the doomed ocean liner, are put to the ultimate test, as they struggle to survive the historic shipwreck—that is, if they don’t all drown in secrets first.