As Barney Gumble walks into Moe's, he notices that it is closed for a meeting. Moe is holding a meeting with the other bars in Springfield to discuss how their customer turnout has been low. When Moe holds a superhero themed bar crawl, Homer and his buddies join in the festivities, leaving Homer passed out in front of his home in the morning before Bart and Lisa leave on the school bus. Meanwhile, Bart feels smothered by his art teacher, who encourages nothing but the best from her students, and wants to get rid of her. When Bart visits a voodoo specialist, he receives some materials to cast a spell on his art teacher, yet his teacher still shows up to class the next day surprising Bart. Even though the spell was meant for a stomachache, Bart receives some startling news that his teacher is pregnant.
Ralph announces that Bart got the art teacher pregnant. The student body, including Lisa, is in disbelief. After Principal Skinner grills Bart, Homer picks his son up complaining how embarrassing it is to find out Bart's bad news during his arraignment. When a couple approaches Bart about his baby-making skills, Bart utilizes his voodoo spell etiquette to give a couple a baby. The spell works, and the couple returns to ask Bart if he could cast the same spell for their couple friends in the same position. Before long, Bart has opened a fertility through voodoo clinic. Homer takes Bart to Moe's to discuss Bart's problems before Fat Tony's cronies come into the bar to kidnap them.
Upon meeting Fat Tony, he orders Bart to work his baby magic on his horses to create a champion racehorse. Homer sees this as an opportunity to show Bart how babies are made. Nonetheless, the stallion turns out to like playing "It's Raining Men" more than making babies with the female horse. The horse then mates with Sudsley Brewright and the pregnancy test comes back positive.