In this sixth entry in the Time Traders series, time agents Ross Murdock and Eveleen Riorden are recalled from their honeymoon to take part in a dangerous assignment: find a team of Russian scientists who vanished without a trace from a research mission in the past of a far-off planet. Along with a team of Russian time agents with their own mysterious agenda, they leap into the alien world's distant history. There they encounter alien races whose appearance, language, and customs are incomprehensibly strange. Some mystery changed this world, and music seems the only tool that might prove a key to unlocking the planet’s secrets. But as they try to decipher a digital alien Rosetta stone, time is running out. Ross must figure out how to save his team before they vanish forever. This high-intensity race against time is filled with excitement and wonder in the grand, retro-scifi Time Traders tradition.