Hermione Granger, played by Elizabeth Bennet, but Harley calls her Hermione, Hermi, or Pudding, is a private detective. She has teamed up with Harley Quinn to form H&H Dective Agency. They've completed four cases together. As they investigate, their styles can clash but they get results. Along the way, Hermione is drawn to Harley's carefree and playful nature. Flirtation has given way to expressions of true affection as they shared their first kiss on the previous case. Hermione arrives and announces they have a new case and is surprised that their tiny office door has a new cartoon hyena emblazoned on it. Hermione asks Harley what's up with Hyena? Harley explains that she thought they needed a mascot, and what better than a Hyena. They're intelligent, excellent problem solvers, often work in pairs, female-led, better hunters than lions, and often underestimated and misunderstood. Plus they're cute. Hermione says they will discuss later, they have a new case, there has been a heist!

Hermione and Harley Quinn arrive at the museum to investigate the heist. They review their notes from the meeting with the curator, who seemed most concerned about keeping the investigation hidden from the public, which is why he didn't want to involve the police. They begin by looking for clues at the museum and try to learn more about the stolen gemstone.

Hermione and Harley's search of the small museum did not turn up anything unusual and Harley has grown restless looking at artifacts. Harley convinces Hermione that since she didn't cause any chaos all afternoon she deserves some ice cream. She's excited for some Cherry Chocolate Diamond Daze, her favorite.

Hermione and Harley enjoy their ice cream at a sidewalk cafe. Hermione admires Harley's enthusiasm for her ice cream and for life in general. As Harley savours her ice cream, Hermione expresses her frustration at not having any leads for the case. Harley asks what is so special about this particular stone anyway? Hermione says they don't know much beyond what the museum has about it, that its several hundred years old and from the middle east. Not much to go on. Hermione suggests they do a reverse image search to find something similiar. Hermione finds another stone that looks suspiciously similiar under another name. Maybe they're connected?

Hermione learns through her research that the similiar stone is from north africa, but not much more. Hermione suggests they pay a visit to the local university to see if they can speak to someone with antiquities experience. Harley complains about how boring this case is with museums and universities and rocks.

Hermione and Harley discuss their meeting with Talia al Ghul, a professor of antiquities at the university, who shared her knowledge of the stones. They are part of an important cultural artifact dedicated to immortality. The museum clearly did not know or care what it was, just that it was shiny. Talia made a comment about how the museum probably doesn't even have legal or moral rights to most of its holdings, just another pillage of culture to show off. Harley detected a lot of animosity towards the museum.

Hermione and Harley decide to investigate the museum's acquisition process, looking for any irregularities or clues that might lead them to the thief and the true motives behind the heist.

Hermione and Harley discuss their interview the museum's curator, who seems nervous and evasive about the acquisition process, leading them to suspect that he may be hiding something. He said the records for the acquisition of the stone were lost, which Harley found hard to believe because isn't a museum best known for holding onto old stuff? Hermione reminds them they need to tread carefully because they were hired by the museum after all, but something seems fishy.

Harley asks Hermione why someone would steal this particular stone, it's clearly not the most valuable item in the museum. Why go through the trouble. Hermione appreciates bringing up motive. Clearly this particular stone meant something to someone. Harley says if she was going to steal from the museum it would be the T-Rex skull, which would make an awesome coffee table for their office. Maybe they should pay professor Talia another vist?

Hermione and Harley go to visit Professor Talia, but she isn't there and it looks like the office was torn apart by someone looking for something. Harley is frustrated that someone else got to smash the office. Hermione wonders if their earlier visit put a target on Professor Talia.

Hermione and Harley brainstorm on where an antiquities professor would hide. Hermione says probably not home, that would not be safe. Harley says it's probably in pile of dusty old books. Hermione say's a great idea, they should check the school library, the professor would probably feel safe there.

After finding Professor Talia hiding in a secluded study room, surrounded by stacks of books and papers, Harley and Hermione discuss how to proceed. Harley is craving some action and suggests that she disguises herself as Professor Talia to see who comes after her. Hermione is concerned for her safety. Harley reminds her that she fought a monster and won pretty recently, she's got this.

Harley, borrowing Talia's jacket and glasses to disguise herself, walks through the university hallways, while Hermione keeps a safe distance communicating with her over their bluetooth earpiece. Harley tries using her Australian accent again, saying Australian expressions. Hermione reminds her that Talia is not Australian. Harley says it's the only accent she knows.

Hermione hears Harley talking to somone. Harley tries to use big words to sound like a professor, but still with an Australian accent. Then Hermione hear's her Harley say she doesn't know where the stone is. She watches Harley being escorted away and chases after her reassuring Harley over the earpeice that she's following them.

Hermione follows Harley and her escorts to an abandoned warehouse on the outskirts of town, where she sneaks in to observe and provide backup, while Harley tries to stall and distract her captors.

Hermione creates a diversion, using her knowledge of the warehouse's electrical system to cause a blackout, and Harley takes advantage of the chaos to slip away from her captors and meet up with Hermione. Having given her captors the slip, Harley suggests they now follow them to see where they go. The hunters have become the hunted!

Harley reveals she was able to slip her earpiece onto one of the captors during the escape. Harley and Hermione tail their former captors, following them to the museum! Harley impatiently waits for Hermione to tell her what they're saying. Hermione says that it sounds like the captors worked for the museum curator. They suspected Talia stole back the stone but they bought it on the market so it's rightfully theirs.

Hermione and Harley put the clues together. It sounds like the Museum acquired this stone through questionable means, probably from the black market. The stone has significant cultural value, that the museum does not seem to appreciate. Someone, maybe Talia, has stolen it, maybe for their own reasons or maybe for good reasons. Maybe it's time to confront Talia?

Hermione and Harley discuss their confrontation with Professor Talia, who revealed that she was aware of the theft of the stone. She supports a group that tries to secure the return of culturally significant artificats to their rightful homes. If they are unable to secure it through political or financial pressure, then some of their members may take matters into their own hands. It wasn't for personal gain. Harley and Hermione discuss whether they should turn Talia in to the museum. Harley realizes this is the second time they've been hired by the bad guys.

Hermione and Harley are back at the office discussing the closing of the case. They decided to let Professor Talia go, but not before warning her that they will be keeping an eye on her and her group's activities for any escalation. They can support the liberation of stolen property, but it's a slippery slope. Harley comments on how the curator was furious that they dropped the case and how they warned him that any further investigation may reveal the museum's questionable procurement practices.

Hermione and Harley sit on the couch together, Harley leaning her head on Hermione's shoulder, and they share a tender moment, happy to have solved the case and to be together.