Rosalie DeLuca was raised by a mother who, after losing her husband and son on the battlefields of Europe during World War II, held a grudge against the Nazis and anyone associated with them. When her older daughter, Carlotta, marries German scientist Sigmund Lowe, nicknamed "Lion," mother and daughter part ways. Rosalie is torn between the love of her mother and a desire to know her sister. When Anna Mary dies suddenly, Rosalie is forced to move in with her sister and her "Nazi" husband. She decides to gather evidence against her brother-in-law. It seems he has sent a bell-shaped vehicle into the future and its whereabouts are unknown. Just when Rosalie believes she has the proof she needs to have him arrested for treason, she's warned by "other-worldly" visitors to end the investigation. It isn't long before Rosalie becomes a pawn in a battle between two alien agendas. Who are they? What is their mission? With the fate of humankind on the line, Rosalie must make the final decision.