Wow!!!! Wow!!!!!
As someone else has already said this story is straight from the Mirage comics issues 1-21 (in a different order), with each Turtle's One-Shot included. Although it looks like Mikey's one shot is a new story altogether.
Oh my God!! They are doing the Return to New York storyline!!!!!!!!!! Although it looks quite different than the original. Wow this looks just amazing. Only 1 month and 5 days and counting!!!!!!!