The Titanic is meant to be unsinkable, but as it begins its maiden voyage, there's plenty of danger waiting for four of its young passengers. Paddy is a stowaway, escaping a deadly past. Sophie's mother is delivered to the ship by police - after she and Sophie have been arrested. Juliana's father is an eccentric whose riches can barely hide his madness and Alfie is hiding a secret that could get him kicked off the ship immediately. The lives of these four passengers will be forever linked with the fate of the Titanic.