When Aang and the gang meet up with a group of refugees, they tell the gang where they can get on a ferry to Ba Sing Se. But after a series of events they have to take a deadly route called the serpent's pass with the help of an old friend, Suki. Meanwhile Zuko and Iroh meet up with a boy named Jet and his freedom fighters.

Having made it to the outer wall of Ba Sing Se, the kids confront a Fire Nation army that is driving a massive Fire Nation drill, which poses an imminent threat to the last Earth Kingdom stronghold. Meanwhile, Zuko and Iroh make crucial mistakes which begin to attract Jet's suspicions.

Johnny Dark measures Dave's inseam, much to his chagrin; while promoting "Ventriloquist Week" for the umpteenth time, Dave argues with his very own dummy; to mark the end of summer, four stagehands help explode beach balls on 53rd Street, then pour 300 gallons of sunblock off the roof.