Once again players control Genie, the wish-granting magic user from Disney's Aladdin. After the events of Magic Shop, Genie's tried a failing combination of potion and spell and ended up in the Harry Potter universe. He apparently swapped places with Dumbledore, who ended up in the Aladdin universe. Shortly after ending up in Hogwards, Genie meets Severus Snape, who immediately sees through his disguise. After a battle between the two wizards, Snape and Genie decide to use the situation to their advantage.
Snape really enjoys sexual intercourse with his students from Slytherin. In return for points for Slytherin, he often asks for some sexual favor.Hermione Granger from Gryffindor has found out about this and tries to get Snape discharged. So, Snape wants to kill Hermione. Genie, who isn't very fond of murder, but does enjoy women, decides it's best to tarnish her reputation instead.
After Slytherin received a lot of points, and Hermione is the only one getting insufficient grades, Hermione snaps. She eventually decides it's best for Gryffindor to also get points by offering herself to Dumbledore (so Genie). Genie then lets her do a whole range of personal and public favors to gain points, effectively destroying her reputation.
Gameplay all takes place in Dumbledore's office. Players can interact with the Phoenix, fire place, cabinet, desk and door. Once per day players can rummage through the crap in the cabinet to randomly receive some items. The desk serves as a means to progress to the evening or next day, or to earn money by writing reports. The door can be used to either summon Snape or Hemione, depending on the progress in the story. The Phoenix and fireplace are just some minor interactions that don't have any effect on the story. After finding a catalogue in the cabinet, the player can also buy items through owl mail, which costs money, and takes several days to be delivered. Things that can be bought are books to increase the money earned (educational books), or books to increase Genie's imagination (fiction books), but also gifts for Hermione when she gets angry with Dumbledore, or some clothing items for her. Concept art can also be unlocked through this store.
The game features two different endings. The first is unlocked by doing a lot of personal favors but no public favors. The second is the opposite of that. The first ending will result in Hermione only wanting to copulate with Genie, whilst the second results in Hermione becoming a slut, and doing about everyone in the school.