Aang struggles to decide whether or not he has to kill the Fire Lord and, during the night, is drawn toward an island which disappears before morning. Zuko leads the rest of the group to the Earth Kingdom to meet a tracker whom they hope can find Aang. The Fire Lord crowns himself Phoenix King and Aang awakens on the island not knowing where he is.
Aang is on the offensive after triggering the Avatar State. Meanwhile, after Zuko seems to have the upper hand against Azula, Katara is forced to join the fight when Azula resorts to desperate measures.
Freelance young Plumbers mistake Ben and his team as a threat.
Joseph and Amanda are caught and taken to the headquarters of Zwölf, a mysterious institution that meddles in forbidden science. Among its members called Apocalypse Knights are people whom Amanda knows well, and this deeply disturbs her. The Apocalypse Knights manipulate specially developed ultra-weapons and easily take down the horde of Amalgams that had previously given XAT such a hard time. Amanda is more enraged rather than stunned.
Zack tries out for the high school basketball team but realizes there's some stiff competition, the kind he didn't face in middle school, and worse yet, the giant, in-your-face Coach Little (Michael Clarke Duncan). Meanwhile, when they're rejected as cheerleaders, Cody and London form their own cheerleading squad with the help of Mr. Moseby.
Derek refuses to help out with Marti's birthday party despite being asked by Sally. Casey wants to get back together with Max, but he is hesitant about the whole idea.
When his neighbor's child plays the piano too loud, Monk decides it's time to move.
Gus' supervisor, Frankjim Ogletree, demands that he quit moonlighting at Psych, lest he face termination. The vice-president of Gus' pharmaceutical company, however, decides to hire the duo as his wife believes that their home is haunted.
With David Baddiel, Michael McIntyre, Chris Moyles and June Sarpong.
A play recounting the gang's adventures does not sit well with Aang and his friends, except for Toph who enjoys it very much. Meanwhile, Aang confesses his love to Katara, but the response is ambiguous.
A dying girl desperately needs a heart transplant and her father will do whatever it takes to make sure she gets one. Even if it means endangering his own life. The team is called and Parker attempts to defuse the situation.
A 69-year-old man with a gunshot wound to the back of the head is found slumped over the rail of a footbridge. A gun is found in found in a holster on the man's waist, and Dr. G finds multiple clues indicating that the man had fired his own gun prior to his death. Could the man have shot himself in the back of the head, or was he murdered?A 23-year-old man is found dead in his bed and covered in vomit after a night of heavy drinking. The decedent's mother reveals that the man took a prescription anxiety medication, and Dr. G suspects that the combination of the anxiety medication and the alcohol may have produced a deadly result. Will Dr. G's hypothesis prove correct?
For Flapjack's birthday K'nuckles, Bubbie, and Flapjack sail west in search of Candied Island.
Tom decides to throw a last minute pool party during a heatwave without consulting Trina first, who is still mad at her husband for his recent affair. Susan lends an ear when Roger loses his job and Bruce gets closer to his co-worker, Melinda.
Katara decides to confront the Fire Nation soldier responsible for her mother's death. Aang tries to talk her out of it, but she doesn't listen.
In a post-apocalyptic world, a woman discovers that the planet has been taken over by zombies.
When a mysterious alien organism takes Dr. Jennifer Keller as its host, the newly revived Dr. Carson Beckett and the crew desperately search for a serum to save her from the evolving intruder before it can infiltrate Atlantis. In the meantime, Richard Woolsey officially joins the team, having been chosen as Colonel Samantha Carter's replacement to lead the Atlantis expedition.
While Michael's new handler asks him to locate a Tunisian counterfeiter, Sam asks him to help a woman who says she is being stalked by a drug dealer, and his mother asks him to join her in seeing a therapist.