"Nancy Drew is seventeen and good at everything... ESPECIALLY solving crimes. But her totally-in-control-and-obviously-running-perfectly-smooth-(but-not-really) life hits a snag when a mysterious message drags her back to the hometown she left behind. There she'll have to find out which of her friends are still her friends, which are enemies, and who exactly is trying to kill her... and (hopefully) stop them before they succeed." -- Publisher annotation....

When Nancy shows up at a charity ball wearing the same dress as her rival Deirdre Shannon, Deirdre is furious, but the girl detective soon has more to worry about when she is kidnapped and must depend on Bess, George, and Ned to rescue her.

A billionaire environmentalist has constructed bio-domes in River Heights to help save the planet, but, shortly after a gross green substance destroys one of the domes, creatures such as Sasquatch, Okala Kane, and the Abominable Snowman are seen lurking nearby. Nancy, Bess, and George investigate.