Rather than rest after saving Fable, Indira must begin a teamwork tutorial that leads to a quest filled with dragons, unlikely allies, and threats to all of Imaginary.

As mysterious circumstances bring Giuseppe, Frederick, and Hannah together, their lives soon interlock like the turning gears in a clock and they realize that each one holds a key to solving the others' mysteries.

"Kate and her friends play in a science-themed escape room that Kate's science teacher puts together to teach Kate and her friends about teamwork"--

Class 507 is terrible, and one day, after a particularly disastrous science experiment, Ms. Bryce quits and walks out in the middle of class, and the school office never finds out--at first all the fifth graders enjoy goofing off, but after a few days that starts getting boring, and the students begin to realize that school without a teacher is not easy, cooperating is difficult, and keeping a secret is harder than they thought.

While Ellie loves the Journey of the Mind club, she struggles to keep from failing miserably on her soccer team, but when both groups have tournaments the same day, she musters her team spirit and tries to succeed at both.

Tonight is the Big Night sleepover at Dunwiddle Magic School, when all the fifth graders stay overnight at school and participate in the scavenger hunt, except Nory's friend Elliott is attending a concert at rival Sage Academy where he plans to attend after the winter break--but if Nory can convince her fellow upside-down magic friends to take the hunt seriously, cooperate, and win, than maybe she can convince Elliott to stay at Dunwiddle.