What is the main conflict in 13 Little Blue Envelopes by Maureen Johnson?

13 Little Blue Envelopes by Maureen Johnson is a story about a shy, young, seventeen-year old girl named Virginia (Ginny) Blackstone who embarks on a European adventure of a lifetime. It is a trip that could be called a treasure hunt with a twist. Ginny is given a series of instructions which are sealed in thirteen separate envelopes.