Continue your story. Include:

• A description of what your character feels upon returning to their present day
• A description of what they discovered about why the library was abandoned and what technology they used in the research process 
• The decision to return to the past
• Your character reconnecting with the guide to explain the impending threat to the library
• The plan for how to save the library
• The cliffhanger moment when the threat to the library's existence arrives