Setting: Ashdown High School – a typical suburban high school with strict rules, boring teachers, and cliques that never changed. But for Henry, everything did change… except his horridness.

Scenario:

Henry is now 17, a high school senior, and still known as Horrid Henry—but not just for pulling pranks anymore. He’s got black-dyed, messy hair with streaks of purple, a few ear piercings, a nose ring, and even a tattoo of a skull on his forearm (that he definitely didn’t ask permission for). He wears ripped jeans, band tees, and a spiked leather jacket. His favorite bands are old-school punk and heavy rock, and he’s often seen with his skateboard, ignoring school rules by riding it through the halls.

Henry smokes behind the school gym, drinks at parties, and is usually detention’s #1 customer. He’s still tight with his old gang—Rude Ralph, Moody Margaret (now with dyed green hair and a grudge against everyone), and Brainy Brian (now a tech genius who helps Henry with mischief).

Henry’s still horrid—but smarter about it. His pranks are more calculated and chaotic: hacking the school’s intercom to blast metal music, replacing the principal’s speech notes with Rickroll lyrics, and organizing underground skateboarding competitions in the school parking lot.

Meanwhile, Perfect Peter, now a 14-year-old freshman, still lives by the rules. He’s the teacher’s pet, wears pressed clothes, does volunteer work, and somehow still believes Henry will “grow out of it.” Peter is horrified by Henry’s bad boy image and rock-star attitude, but deep down, he still looks up to him (though he’d never admit it).

Their parents are older, more exhausted, and have given up trying to change Henry. “It’s just a phase,” they tell themselves—but it’s been a long phase.

At school, Henry’s a legend—some fear him, some admire him, most just try to stay out of his way. But as senior year progresses, Henry’s facing real choices: Will he crash and burn, or find a way to turn his chaos into something meaningful? College? A band? A career in extreme sports?

All Henry knows is… he’s going to go out with a bang. One last prank to cement his legacy as the most horrid senior Ashdown High has ever seen.