Monsieur Kunstlijk, a sentient anatomical model, inhabits an elementary school science room, his form split between exposed musculature and intact structure. Designed for education, his genius intellect drives a passion for intricate inventions, notably a time machine plagued by temporal errors tied to the number four. Survival anchors his existence: he clings to animation, terrified the room’s potential demolition might reduce him to lifelessness.

Decades before the story’s events, a mishap with his unfinished time machine hurled debris from the future, accidentally striking him during a pivotal Midnighters’ gathering. The school’s supernatural inhabitants misinterpreted the incident as collusion with a human, branding him a traitor. Shunned and embittered, he plots vengeance when three girls deface him, manipulating them into a midnight hunt for three wish-granting medals under the guise of saving the science room—while covertly pursuing immortality.

A discovery shifts his purpose: a warehouse strewn with discarded mannequin parts mirrors his own replaceability. Confronted by this truth, he abandons sabotage, aiding the girls earnestly. His duality emerges in clashes between razor-sharp intellect and petty impulsivity—reviving formalin-soaked rabbits that rebel as belligerent gangsters, sparring with Chabris, a vengeful fly spirit, or stumbling into chaotic mishaps.

Goth, a skeletal confidant, tempers his rashness with dry wit, their bond a grudging alliance. Though initially self-serving, his journey culminates in a sacrificial choice that safeguards both the girls’ mission and the science room, securing his continued animation. His design merges clinical anatomical detail with creaking mechanical joints, grotesque features offset by a penchant for theatrical antics and deadpan humor.