In this special, "It's a Wonderful Life"-style story. The Turtles return to their lair, triumphant after another mission, but they are frustrated that they let Shredder slip away from them again.
They feel like giving up, and wish they had never been born -- wishing that they never had to bear the burden of fighting crime. They go to sleep still thinking these thoughts.
When they wake up, however, they find things have drastically changed. The lair is gone, Splinter doesn't exist, and New York is now known as "Shredderville". The Turtles soon realise -- to their horror that their wish has come true, and that they no longer exist!
Exploring this strange, warped Earth, the Turtles discover their friends are either slaves (April and Irma), or anarchists (Zach)
They also find out Shredder is a man tired of being the big cheese, and frustrated with the responsibility that comes with his position.
Just when things couldn't get any worse, the Technodrome (now more of a broken-down relic than a war machine) is on the verge of exploding. If it goes boom, that can only spell doom! Can the green machine escape this nightmare?
The Turtles, Zach and his friend Caitlin visit the Museum where a magician, the Great Boldini, intends to make a valuable emerald disappear. Everything seems to be going well until the light come back on. The audience sees Boldini tied up, gagged and the emerald is missing. He insists he has nothing to do with it. Everyone at the museum is searched. During the search, the Turtles are revealed and arrested. Zach and Caitlin follow Boldini thinking that he is acting suspicious. They discover that he's working with Don Turtelli and that he did indeed steal the emerald. The Turtles escape and break back into the museum searching for Zach and Caitlin. Down in the basement of the museum the Rat King discovers Boldini, Don and the kids. The kids manage to escape from Boldini along with the emerald but are shortly captured again. They manage to hide the emerald before they are recaptured. Meanwhile, the Rat King decides to work with Boldini and Don in getting the emerald back.moreless
The Turtles throw April a surprise party to celebrate her first anniversary as a reporter at Channel Six News, but April is not feeling very celebratory -- it seems that Burne Thompson has suggested that she will not be celebrating her second anniversary if she does not find a story soon. Donatello and Irma rush out to get a special pizza in an effort to lift her spirits.
Meanwhile, Krang and Shredder send Rocksteady and Bebop up to the Earth's surface to locate "a new source of energy generated by the Nuclean Fission Reactor at the University." But the mutants think that Shredder is sending them "fishing" and when they finally learn their mistake, a bright ray of light, coming from out of the sky, zaps Rocksteady and he disappears.
The Turtles are watching April's special report, live from the Army testing laboratory, on the first public display of a new "Super Laser," when suddenly, a bolt of lightning from an electrical storm overloads the Super Laser's computer, causing it to blast a hole into space and another dimension -- which enables a Robot to be transported into the laboratory. Thinking that it is some form of an alien monster the military tries to destroy it. The Robot is amused and fires a laser beam that melts their weapons. The same thing occurs when the scientists try to use their new Super Laser on their unknown visitor. After witnessing the above events, the Turtles are convinced that Shredder and Krang would love to get a hold of whatever that "thing" is.moreless
Dressed in their human disguises, Donatello and Raphael venture out of their Turtle lair to buy supplies to make pizza. On their way back, via what they believe to be a shortcut, they are "intercepted" by a gang of young street Punks. Suddenly, a young boy wearing a Turtle costume, and who calls himself Zach: "Master Ninja Turtles and the Scourge of Evil Doers," drops in out of nowhere. As he prepares to defend Donatello and Raphael, he falls flat on his face, allowing the real Turtles to dispatch the punks with ease. Afterwards, Zach explains how he wants to help them fight crime -- but Raphael tells him that he is more of a menace than a crime fighter. The kid leaves in a huff, picking up Donatello's Turtle-Com -- which he had lost in the scuffle with the would-be attackers.moreless