Rich girl Lindsay Peyton is throwing the biggest and best Sweet Sixteen bash that Bayport has ever seen. But her party planning is off to a bad start when Frank and Joe discover that someone has keyed her very expensive car - an early birthday present - and has put the mean prank up on YouView. Soon after the prank goes viral, a group calling themselves the Scaredevils begin to film themselves committing acts of violent vandalism around town. Broken windows, Dumpster fires, and more threaten the security of Lindsay's party - and of Lindsay herself. Frank and Joe are determined to figure out who is the mastermind behind the videos before Lindsay's Sweet Sixteen turns into a party she will never forget…for all the wrong reasons.