The X dimension is coming to Earth and chaos is imminent! Turtles are back home... but they are not alone. Rising from the Earth thousands of years ago, Triceratons are finally free to return to their mother planet. And if they come in peace, the Earth Protection Force reserves them a most hostile welcome. The conflict is rumbling and threatens to devastate everything on its way... In the face of this intergalactic invasion in the heart of New York, will Splinter's sons manage to calm tensions before the world is plunged into the chaos of total war?