Teenage Mutant Ninja Turtles (2003) S2E13
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Teenage Mutant Ninja Turtles (2003)
S02E13 — Return to the Underground
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Teenage Mutant Ninja Turtles (2003) poster

Teenage Mutant Ninja Turtles (2003)

S02E13 Return to the Underground

2004-03-06

The Turtles make their way back to the subterranean city, only to discover it is deserted. The powerful crystal moon that once energized the city is gone, and its human inhabitants have transformed into monstrous creatures. With time running out, can Donatello's volatile serum reverse the effects and bring the humans back to their former selves?

Season 2 Episodes

1
Turtles in Space (1): The Fugitoid
2003-11-08
 2
Turtles in Space (2): The Trouble with Triceratons
2003-11-15
 3
Turtles in Space (3): The Big House
2003-11-22
 4
Turtles in Space (4): The Arena
2003-11-29
 5
Turtles in Space (5): Triceraton Wars
2003-12-06
 6
Secret Origins (1)
2004-01-17
 7
Secret Origins (2)
2004-01-24
 8
Secret Origins (3)
2004-01-31
 9
The Ultimate Ninja
2004-02-07
 10
Reflections
2004-02-14
 11
Modern Love - The Return of Nano
2004-02-21
 12
What a Croc
2004-02-28
 13
Return to the Underground
2004-03-06
 14
City at War (1)
2004-03-13
 15
City at War (2)
2004-03-20
 16
City at War (3)
2004-03-27
 17
Junklantis
2004-04-03
 18
The Golden Puck
2004-04-10
 19
Rogue in the House (1)
2004-04-17
 20
Rogue in the House (2)
2004-04-24
 21
April's Artifact
2004-05-01
 22
Return of the Justice Force
2004-05-08
 23
Big Brawl (1)
2004-05-15
 24
Big Brawl (2)
2004-09-18
 25
Big Brawl (3)
2004-09-25
 26
Big Brawl (4)
2004-10-02