The Teenage Mutant Ninja Turtles were proving their worth in a battle against the various Smashers that were coming after them; of course they were aided by April O'Neil farting and using her camera equipment to fight off the generic Mii fighters being spawned in: this was all taking place on the Manhattan rooftops in New York so the turtles could easily guess this was yet another ploy by Shredder to get at them while their guard was down.