[s3e40] The Missing Map -

The plot centers on , the "Fifth Turtle," and his older brother Walt .

The episode features a rare sequence where Michelangelo walks the boys through a convoluted path to ensure they can't easily find the lair again—showing the Turtles actually do care about security. [S3E40] The Missing Map

Book #19, The Quest of the Missing Map , where Nancy searches for a treasure hidden by a seafaring grandfather. The plot centers on , the "Fifth Turtle,"

Walt, envious of the attention his brother gets from the Turtles, steals a rare pouch containing the only physical map to the Turtles' secret lair. The plot centers on

Fans often point out the plot hole of why the Turtles would even keep a physical map to their own home if they wanted to keep it secret.