A young woman left by her traveling parents attends a girls' school and confronts campus life full of puzzles, social plans, and theatrical entertainments. Encounters with a striking resemblance lead to gossip, mistaken identities, and a sensation that tests friendships and honors. Letters, accidental meetings, and small rescues gradually reveal hidden connections, while senior-year responsibilities and personal discoveries bring tensions toward resolution. The narrative moves from bewilderment through revelation to reconciliation as relationships are clarified and the central character returns to her father's home with the main mysteries settled.