Teenage Mutant Ninja Turtles (2003) Season 1 Episode 21
With Leo fully recovered the goal is clear: to destroy the Shredder once and for all. With April providing remote computer assistance, the Turtles begin their assault on the Foot HQ skyscraper, fighting their way to the top floor by floor. They battle an army of Foot Ninja Guards and the deadly cloaking Foot Tech Ninja. But no one is quite prepared for what they encounter inside a Foot Genetics lab…
Episode Title: Return to New York (1)
Air Date: 2003-09-27