Message in a Bottle

When walking on the beach one day, Emily finds a bottle with a message from a girl named Fiona. There is no address on the note, and Emily and her classmates set out to track down Fiona, using the Internet. They find Fiona, and when she and Emily become penpals over the Internet, they deiscover they have a lot in common. They also arrange for other students in their classes to become penpals.