In the midst of his crumbling relationship, a radio show host begins speaking to his biggest fan, a young boy, via the telephone. But when questions about the boy's identity come up, the host's life is thrown into chaos.
Mia Thermopolis has just found out that she is the heir apparent to the throne of Genovia. With her friends Lilly and Michael Moscovitz in tow, she tries to navigate through the rest of her sixteenth year.