[s1e21] Return To New York: Part 1 Here

The group arrives at their old lair to find it deserted, realizing the Shredder believes they are dead—an advantage Splinter insists they use to launch a surprise attack.

The Turtles begin a systematic ascent of the skyscraper. They face an army of Foot Ninja and the formidable Foot Tech Ninjas , who use advanced cloaking technology to remain invisible. [S1E21] Return to New York: Part 1

After initially being overwhelmed by the invisible attackers, the Turtles adapt. They use fire extinguishers to coat the area in dust, revealing the ninjas' silhouettes, and Donatello uses electro-magnetic shurikens to short-circuit their cloaking devices. Key Reveal & Cliffhanger The group arrives at their old lair to