Inspired by a movie shown at the local gym (with the whole town in attendance), 11-year-old Leon (aka Thumb) wants to track down a bad guy. After all, without bad guys, the Harry Potter books would just be stories about school. And he wouldn't mind being known as the Jake Danger of New Auckland. But with only 143 people in his remote British Columbia fishing village, surrounded by mountains and ocean, how could there even be any bad guys around? And where would they hide? But Thumb is determined, so he and his pal Susan conduct a stakeout. Their suspicions soon focus on bald, toothless old Kirk McKenna, who has the revolting habit of spitting on the sidewalk. Meanwhile, a new teacher, the odd Ms. Weatherby, has arrived in town wearing heavy makeup and a terrible wig. Maybe she's the "bad guy" they're seeking. Will the determined duo find their villain?