Action League Now! S02 E09 Caged Thunder

Thundergirl, while secretly taking photos of The Mayor's illegal weaponry, is captured and placed in a cage. It’s up to the rest of the Action League to rescue her, but, per usual, they screw up, ending up in the cage along with her. After a dumb bet placed by Meltman, The Mayor proceeds to press a button that sets off a rocket scheduled to blow up the capital.