In three sentences, write an introduction to a narrative written in first-person point of view. Be sure to include an introduction of main characters and a problem they face.

Hi, my name is Sarah and I never thought my mundane life working at a library would turn into a thrilling adventure. My co-worker and best friend, Alex, found a mysterious book hidden deep in the archives that seemed to possess magical powers. As we delve into the book's secrets, we quickly realize we are not the only ones seeking its power, putting us in grave danger.