“Why does it feel like everywhere you go, you spawn some kind of competition?” Pearl said, her tone teasing but light, her grin creeping over her face. Mumbo’s eyes widened minutely, shifting uncomfortably and pulling at where his Taskbook clasped to his belt. Oh, poor guy couldn’t be less subtle if he tried. Feeling ever-benevolent, Pearl decided not to pry on that particular sore spot. “Do you have something to prove, Mumbo?”

Mumbo spluttered, shaking his head frantically and fixing his tie. “No! Of course not!” he looked around shiftily, pointedly avoiding Pearl’s dark eyes. “I think we should change the subject.”

After the tower-off, Pearl is determined to find out why Mumbo seems to spark a competition wherever he goes. She initiates a contest of willpower that poor Mumbo would never be able to win.