As karma for causing a huge ruckus, Boris gives Caillou the worst punishment day in history.
When the sun rises, Boris and his wife, Doris, prepare the equipment to punish their son, Caillou, for getting his younger sister, Rosie, possessed by a demon. By the time they have everything prepared, Boris wakes Caillou up by slapping him on the buttocks before throwing him down the stairs to face his punishment day. For the first punishment, Rosie forces Caillou to lie down on top of a bed of flaming-hot coals. After Caillou gets thermal scars from the hot coals, Doris pummels him with a sledgehammer so hard it kills him. Not willing to let Caillou off the hook just because he's dead, Boris resurrects him by transferring his soul into one of his many cloned Caillou bodies that he has created to keep torturing him in case he dies. With Caillou alive again, Boris repeatedly whips him on the buttocks with a cat o' nine tails. After he finishes, he, Doris, and Rosie hang Caillou from the roof by his ankles and lower him head-first into a bucket full of bullet ants, and they refuse to let him out for thirty minutes. Once he's finally released from the bucket of bullet ants, Doris takes him to a storage closet, where she tells him that he needs to eat a glass ornament. Not believing her, Caillou tells Doris that he always thought her facial expressions were a joke. Offended, Doris makes Boris pin Caillou to the ground, then shoves the glass ornament down his throat. After sustaining pharyngeal damage from the broken glass shards, Caillou is forced to take fiery hot shower by Boris. However, when Boris turns on the shower, propane comes out of the shower head instead of water. Boris then lights the propane on fire, causing an explosion that burns Caillou to death. After resurrecting Caillou, Rosie shapeshifts into an anime fighter and blasts him out of the house and straight into the road. Just then, Doris proceeds to run Caillou over with her car, followed by Boris hacking his body to pieces with a lawnmower. After Boris revives Caillou again, Rosie shreds a lot of skin off of his face with a cheese grater. Emotionally scarred by the torture, Caillou threatens to kill Rosie for her malicious actions. Unfortunately for him, Boris defensively warns Caillou that since he has crossed the line, he will now be subject to more punishments than previously planned. Immediately afterwards, they all board a plane and kick Caillou out the plane without a parachute right as they're above the Sahara desert. They then jump out the plane with parachutes and glide to Caillou's location, where Boris executes the next punishment. He subjects Caillou to rat torture, which ends up killing him due to the rats having no way to escape but by eating through his vital organs. With Caillou having been killed once more, Boris transfers his soul into another cloned body, which he has placed on top of a cactus to keep torturing him by the time he comes back to life. Then they walk deeper into the desert, and by the time they reach an oasis, Boris forces Caillou to stay away from it and watch as they drink water from the oasis. After Caillou endures the torture of not being allowed to rehydrate while in close proximity to the only source of water for miles, Rosie forces him to stick his hand into a nest of rattlesnakes, causing him to repeatedly get injected with their venom. After that, Boris chains Caillou to a rock and makes a scorpion drip its venom into his eyes. Once he has finished, he teleports them all to the Burj Khalifa and throws Caillou off the top of the building, then jumps down after him to beat him into the ground. When they land, the impact of Boris colliding with Caillou's body gushes lots of blood out of him, making him temporarily unconscious. After they teleport home, Rosie grabs Caillou by the feet and repeatedly slams him face- and stomach-first into a spiked pit. Once she finishes, Caillou, enraged, cusses out Rosie and lifts his middle fin in her face. Unfortunately for him, this also triggers Boris, who warns him that he is now guaranteed to be subject to even more punishments than originally planned. When they walk inside, Doris whips Caillou with a plug-in extension cord, electrocuting him multiple times in the process. Boris then makes Caillou lie on the couch and slices off his penis with a 1,000° knife. Afterwards, Boris takes everyone to his secret lair to administer the remaining punishments. Upon laying eyes on the secret lair, Caillou becomes terrified by the sight of torture machines and corpses everywhere and naturally exclaims that he hates the secret lair. Offended, Boris warns him that he is now subject to even more punishments than before. He then orders Rosie to beat Caillou with a spiked bat, which she does. After that, Doris straps Caillou to a torture table and gouges out both of his eyes with a knife. Immediately after, Boris pours molten iron into Caillou's eye sockets, which cooks out all of his internal organs. With Caillou dead once more, Boris revives him again, and Rosie makes him take a bath in a cauldron full of scalding-hot grease. Once Caillou is allowed out of the grease, Doris gives him a severe third-degree burn by pressing a clothing iron onto his stomach. Boris then puts him back on the torture table and smashes both of his testicles with a sledgehammer. After that, Rosie uses a magic wand to put a curse on Caillou, inflicting even more pain. Boris then announces that they are finished with administering the punishments they intended, but since Caillou has misbehaved three times, he will now be subject to the extra punishments they warned him about. For the first additional punishment, Doris grabs a sledgehammer and shatters both of Caillou's kneecaps. After that, Boris pins Caillou to the ground and rapes him. With Caillou scarred from the rape, they prepare to scar him even more by forcing him to shoot his beloved pet cat, Gilbert. After Caillou shoots Gilbert, Boris forces him to eat the dead cat's corpse. With Caillou now scarred for life due to the loss of Gilbert, Boris decides to give him the final blow by launching a nuclear warhead at his favorite restaurant, Chuck E. Cheese. By the time the missile strikes, the destruction of the Chuck E. Cheese restaurant sends Caillou spiraling into depression. After three weeks, Caillou begins thinking about Chuck E. Cheese before realizing he can't go there anymore because Boris destroyed it with a nuclear warhead. Not realizing that there is another Chuck E. Cheese establishment on the other side of town, Caillou, seeing no escape from his indefinite depression, commits suicide by jumping off the top of a nearby skyscraper. To his misfortune, his parents record his suicide on camera, post it online, and celebrate his death at his funeral.