To celebrate her birthday, George is taking Nancy and Bess on a bike tour around Mystic Lake, but when their tour guide disappears and unknown adversaries steal their supplies and slash their tires, Nancy begins looking for clues.
In the sleepy town of Shady Oaks, Nancy Drew and her friends investigate an exhibit of photographs, rumored to be cursed, and their connection to the disappearance of two people.
Attending the annual Greek mythology gala at Oracle College, Nancy, Bess, and George race to assist when a student falls from a balcony in the middle of her speech, an accident the sleuthing trio links to collegiate sabotage.