On the first day of tenth grader, Lee Ping is framed for a mind-blowing prank and thus is sentenced to one full year of detention and one full year of grounding. Lee's fellow inmate Biff convinces him to sneak out of detention to collect evidence from the auditorium which can prove his innocence. The only thing Lee can salvage is a camera phone which contains a picture of someone messing with Lee's bag during the Prank, and when Lee finds a match for the hand in the photo he will clear his name.

Having collected a photo of the hand of suspect number one Lee enhances it and discovers that the suspect is wearing a A. Nigma High championship football ring and has a scab on his mid-knuckle. Realizing that the scab could be gone by tomorrow Lee sneaks out of detention again and tries out for the football team so that he may check the players for scabs. Lee soon discovers that their water boy is a kleptomaniac who stole the ring and a can of paint from Lee's bag.

Having failed to find the prankster on the previous day, Lee is at a dead end. Luckily Lee encounters a group of students known as the Skaters who state they were responsible for the paint portion of the Prank and request instructions on more pranks from Lee. Misunderstanding Lee's intentions, they plot to rig the Student of the Week vote to come up as Principal General Barrage and dump the remaining paint on him on live TV along with the host Tina and Chaz. Lee is narrowly able to avert the disaster (as he doesn't want Tina to have paint dumped on her) and in the process learns the email address of the prankster, Radcircles@ANigmahigh.

A chance encounter with his old rival, Irwin of the Mathletes, leads Lee to the conclusion that he is Radcircles. Lee sends Holger in during detention to spy on the Mathletes but he is captured and tortured forcing Lee to sneak out to rescue him. Lee confronts Irwin and the latter reveals that while he did send an email to the Skaters, and then some, it was a photoshopped image of himself and Lee to make it look like the latter was picking his nose. In a subplot Cam is attempting to learn the identity of the one who sent the photoshopped image and in the process learns the identity of Radcircles, former principal of A. Nigma High, Principal Wurst.

Lee is blackmailed by his self proclaimed girlfriend Brandy who forces him to attend a party of hers or else the fact that he's been sneaking out of detention will be revealed. In order to avoid the wrath of his overbearing mother Lee attends the party. There he learns the identity of those that composed the music for the Prank, the Dudes of Darkness, which has a hypnotic effect on the other party goers. Unfortunately Lee's mother learns from watching the news that Lee was at the party against her strict demands of grounding, getting him into even more trouble.