Krang works on an oxidizer rocket with enough power to blast the Technodrome to Earth, but something goes wrong, and instead of thrust, the device grows rust.

The Turtles are vacationing in the Alps, as Splinter goes off to a nearby mountain to meditate. April is in an Alpine village with Irma when she notices the ice and snow melting, unusual for this time of year.

Krang decides to use a hydrofluxer device to flood Venice, holding it for ransom.

Two snobbish art-collecting aliens arrive in Florence and begin stealing great works of art.

Krang sends Shredder to set up a special lens that will focus the sun's rays to create a devastating heat ray.

Krang and Shredder decide to use Ireland as their base for the Technodrome. With a device called the Rainbow Trans-Charmer, the villains intend to turn harmless little creatures like sheep and rabbits into slavering beasts.

In Dimension X Krang is using a long-range scanner and discovers a rare metal buried in a ruined castle in England. The metal turns out to be King Arthur's legendary sword, Excalibur.

Shredder, Rocksteady and Bebop are searching for a valuable energy source in Athens and discover that it is April's new necklace.

April is covering the revival of the Orient Express. Shredder is on the train with Rocksteady and Bebop carrying the supercharger, a device to accelerate the train to super speed.

April is covering the showing of the world-famed Duchess Diamond. Krang wants the diamond, a flawless stone, to focus the rays on his laser dimension blade.

Eric Red, seizes both April and Professor Swenson's map to the underground volcanoes in Scandinavia to tap into the molten energy and melt the polar ice caps.

The Turtles are in England, when they are taken back to the past, via an experimental atomic clock and must team up with Sherlock Holmes and Doctor Watson in order to get the clock back and return to the present.

Donatello's Early Detection system sounds its alarm. According to Donatello's readings, the city has experienced a major vibration emanating from the Earth.

While rummaging through the local junkyard the Turtles witness the crash landing of an alien spacecraft.

At the Museum of Fine Art Shredder uses his time portal to journey back to ancient Japan so that he can destroy Splinter and the turtles.

Thanks to a malfunction in Donatello's Inter-Dimensional Early Warning Detection Machine, a tear has occurred in the fabric of space and time, allowing two heinous criminals from Dimension X, Skaarg and Dementor, to arrive in the city.

Splinter is contacted telepathically by his sensei, Master Mogo-san who requests that Splinter meet him at Pier 17.

Krang, Shredder, Bebop and Rocksteady break in to the City Hall Records Department and steal maps of the sewer system dated 1895.

While investigating the most recent robbery perpetrated by the Mole Squad, April and the Turtles stumble upon a secret meeting between the Mole Squad and Dr. Floyd O'Toole, a scientist who has been missing for weeks.

The Turtles visit April at Channel Six News and ask her if they could use the stations' equipment to contact their old Turtleoid buddy, Kerma, on Shell-Ri-La.

Thanks to Vernon's irresponsible journalism, the Turtles find it necessary to stand guard at the Genetic Research Lab.

While surfing in the white water rapids of the sewer, Michaelangelo is rescued by Merdude. Tthe Turtles, using Donatello's Porta-Tracker, volunteer to help Merdude find his way back home.

After an unsuccessful attempt at capturing Razar and Toka, the Turtles return to the lair to see the eccentric billionaire, A. J. Howard, spouting his ideology and his hatred for mutants across the airwaves.

Krang makes copies of himself and sets them loose to attack the turtles.

There is a new amusement park in town and called Combat Land. The park's owner, Horatio Stressbar, has been unable to find anyone with the combat skills to give his robotic warriors a thorough work out.

Shredder, Rocksteady, and Bebop arrive at the Asian arts exhibit and proceed to loot. The turtles head out to stop them despite a grave warning from splinter that there will be dire consequences.