Riley is now in high school. She's doing well in SATs and ACTs, she got her driver's license, and she's varsity captain on her school hockey team. Along the way, new emotions are introduced: love, shame, and temptation. Riley is 17 going on 18 and is hoping to graduate with honors. Some of the emotions at Headquarters think that what's more important is the senior prom. The only thing is... Who will she go with. One thing leads to another and some of the emotions, including Love, get lost in Long Term Memory again. Temptation, Shame, and Mischief propose a plan to make Riley popular (cheating on a test, pranking the cool kids, etc.), which results in getting bad grades, a visit to the principal's office and a visit to the guidance counsellor. The longer it takes for Joy and the others to get home, the more it's likely Riley will get suspended. Shame lives up to his name and tries to get Joy and the others back to Headquarters before it's too late.
