Maelstrom, a thief who was caught by Carmen during her time as ACME-detective, escapes from prison, swearing revenge on her. At first, it is reported to the detectives that he died during his escape. The detectives are curious about him and The Chief tells them about his adventure with detective Carmen. During that adventure, Carmen and a robot version of the Chief stop Maelstrom from stealing the wreck of the Titanic. At the conclusion of the story, Ivy and Zack find out that Maelstrom is alive and see the opportunity to catch both Carmen and Maelstrom. However, when the detectives sneak aboard Maelstrom's ship, he captures them.

Zack and Ivy puruse Carmen to Ayer's Rock where she has brought items of mysterious origins together in an attempt to contact aliens.

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Carmen's dream of landing on the moon inspires her to try and make it come true.

After recovering Ben's key, Zack and Ivy travel back to Boston and discover Carmen stole Paul Revere's horseshoe. They fail to recover it then and chase Carmen to England and prevent her from stealing the uncracked Liberty Bell. They manage to recover the horseshoe, but Carmen reminds them she can simply travel back through time and steal it again. Zack and Ivy follow her to Paul Revere's barn, but she gets away. Then the detectives return the horseshoe and history returns to normal. In the present day, Zack sets the Chronskimmer down for a moment and it disappears...

Carmen arrives in the year 2101 where she stops a heist of a powerful electro-magnet. Meanwhile, Zack and Ivy arrive at the future Acme Detective Agency where the wacky Future Chief doesn't recognize them. They try to prove who they are, but run into a few scrapes with the law. Eventually they meet up with Carmen in Africa. Although the detectives expose that she is a criminal, she escapes with the magnet and Zack and Ivy end up captured.

Carmen goes back in time to steal obhgects that can change history. (i.e., the shoe on Paul Revere's horse, and the tea from the Boston Tea Party)

Carmen kidnapps two white lion cubs and sets up her own game preserve for them.

The Player challenges Carmen to a low-tech crime. Carmen accepts the Player's challenge and attempts to steal the Orient Express. Zack and Ivy need some help to solve Carmen's clues and are partnered with a gaucho detective named Armando.

Carmen figures out a way to steal musical talent and transfers it to her two talentless henchwomen. She decides to showcase her accomplishment in a concert inside the stolen Sydney Opera House

Carmen warns the Player that her next crime ""promises to be a real gem."" Soon he and the detectives discover what Carmen meant. She created a large diamond and uses it to cause an information traffic jam across Acme's frequencies.

Zack and Ivy discover Carmen's underground training facility and go undercover as henchmen in training to try and nab Carmen. However, Carmen discovers them and leads them to a chamber that seems to have no way out. There is one way- an escape into time. Carmen created another time machine and uses it to escape. The detectives use a new Chronoskimmer that the Chief gives them and they trace where Carmen is heading- the future.

When Carmen is captured by a judge bent on sentencing her to life in prison, Zack and Ivy are appointed her defense team. Carmen was accused of recently stealing the Magna Carta, which she did not steal. Zack and Ivy try to gather evidence to prove Carmen did not commit this particular crime. But is she really involved after all?

Carmen steals parts of famous artwork to try to create her own personal masterpiece.

Carmen steals objects that have to do with literature such as Mark Twain's writing desk, Charles Dickens's inkwell, and a jungle ruin like the one that appears in the Jungle Book. They follow Carmen's clues to a remote hideaway in the Swiss Alps where they think Carmen was writing her memoirs. However, she was actually sending the detectives on a wild goose chase while Sara Bellum had tapped into Acme's files and stolen them all.

Zack creates a computer, the Zack Attack 20,000, which he believes will capture Carmen. However, when Carmen escapes with one of the treasures Zack had the computer protect, Ivy decides that she doesn't want to put her faith in it. The siblings go their own separate ways on this case, until Ivy is captured by Carmen.

When Carmen steals famous gifts from around the world, Zack and Ivy are puzzled- especially since her clues are in the form of a scavenger hunt. Suddenly, the detectives realize why Carmen is doing this. It's her birthday and she is stealing these famous gifts to give them to herself.

Zack and Ivy escape Maelstrom's ship and find out that Carmen still believes that Maelstrom died in his try to escape from the prison. Carmen wants to give him a worthy Viking-like funeral in Norway. Zack and Ivy find her beginning to give him such a funeral and are about to tell her that Maelstrom is alive when Maelstrom appears in a ship beside Carmen. He challenges her to come after him or die, and then speeds off. Carmen manages to get Zack and Ivy aboard her ship and they make an agreement to join forces to capture Maelstrom. Carmen remembered a clue he left, so she and the detectives follow it to Williamsburg Virginia where Maelstrom captures them and publicly humilates them in the stocks of the town square. Zack and Ivy escape and help Carmen do so as well. They get separated and the local police arrest the detectives for freeing Carmen!

Carmen's henchman Mason Dixon steals her time machine. Suddenly, he is the leader of V.I.L.E. and Carmen is only his henchwoman. Zack and and Ivy have to restore Mason's damage, and also stop him from trying to change the outcome of the Civil War

All ACME detectives are making holidays on the Seychelles. Josha, the genius of the detectives, is in love with Ivy but she doesn't notice. When Carmen tries to steal Josha's latest invention, she tries to distract the detectives by stealing highly romantic items.

Carmen begins to steal items that she once saved from other criminals to lure her ex-partner, Suhara, out of retirement. Suhara joins Zack and Ivy to pursue Carmen- much to Zack's dismay. Zack feels Suhara is too old to be of any assistance. He soon learns to respect Suhara and even though they ultimately lose Carmen, Zack learns a valuable lesson that he'll never forget.

When Carmen attempts to steal several items having to do with military strategies, she is foiled several times by ""The Tigress,"" a thief with a lot of high-tech weaponery of her own. Meanwhile, Zack and Ivy rush into tell Chief something, but he doesn't listen until Carmen starts to listen in on their frequency, so now they can't tell Chief their secret. Every time from that point forward, when Carmen tries to steal something, the Tigress takes it first. The Tigress lures Carmen to Antarctica, where she reveals herself to be Ivy in disguise. Carmen was ambushed by Acme detectives and taken away, but escapes when she steals Ivy's CO2 boots Zack invented, and rockets away.

Somehow, the world's largest diamond, the Star of Africa, was stolen. The police are baffled and it's up to Zack and Ivy to figure this mystery out. They soon discover that one of Carmen's henchmen tried to double-cross her and keep the diamond for himself. With a little trickery of their own, the detectives recover the diamond.

The Chief manages to convince the local sheriff to free Zack and Ivy. They meet up with Carmen again and persue Maelstrom. Malestrom begins to steal items and frames Carmen for their thefts! He wants to ruin her reputation as thief with a conscience.

Carmen's thefts all seem to follow a Wizard of Oz theme. While chasing after Carmen, Zack and Ivy discover that Carmen was an orphan. They trail her to the Golden Gate Girls' School which is about to be torn down. The detectives recover all the stolen objects except for the orphanage. Zack and Ivy see this theft as being almost justified though because it was about to be torn down and was the only home Carmen ever knew.