Teenage Mutant Ninja Turtles, Volume 19: Invasion of the Triceratons

Following the trial of Krang, the Turtles return to Earth, but, while they may be done with outer space, outer space isn't done with them!

Abducted from their planet millennia ago, the Triceratons are at last free to return home. They come in peace, but how will the world react to a Triceraton “invasion” in the heart of New York City? About how you would expect, especially when the Earth Protection Force gets involved. As the three-pronged attack begins in earnest, it’s up to the Turtles to stop the conflict before it escalates into all-out war!

Collects: Teenage Mutant Ninja Turtles #76–80.