The Charmed Library

Then Stella stumbles upon strange characters in the library after hours. One is an oddly familiar World War II soldier who introduces himself as Jack--Jack Mathis, the main character from her favorite book. A fictional hero and Stella's first crush. Jack tells Stella about the magic hidden in the library. Skeptical, Stella rashly invites a villain to visit, and chaos ensues. The characters who visit the library can only stay for fourteen days. And Jack's time is almost up.