Darius Dunn controls Turtle X to exact revenge on his nephew and the Turtles.
Miley wishes that she could sing the blues (or any song for that matter) when she needs to undergo throat surgery. But can a dream about her late mother have her whistling a happy tune?
In order to avoid spending time with Sophie, Mark gets a gym membership. Whilst there he discovers that Jeremy's ex-wife Nancy is working there. Mark tells Jeremy who then becomes desperate to get back together with her. He decides to take a job as a cleaner at the gym and sets about stopping her from dating Mark's personal trainer Matt.
After seeing her working relationship with Daniel, her close friendship with Christina, and her chance to date Henry all fall apart, Betty is left with no choice but to turn her back on all three. Meanwhile, romance is in the air: At MODE, Alexis catches the attention of a guy and he asks her out; Amanda flirts with a designer who she believes is gay; and Wilhelmina finds her latest advances very tiring. Over at the Suarez's, Santos gives Hilda a little surprise.
In 12 hours, the ER will shut down. As Kovac is under pressure to take care of the patients before the final hours, he makes a pivotal decision about his future. Meanwhile, Sam befriends a photojournalist who returns only this time she's terminally ill; Pratt is concerned when his brother ends up in the ER drunk; Morris confronts Gates when he ignores his orders and angrily sends him home while Gates tries to defend his actions.
As TGS' summer hiatus approaches, Liz deals with the difficulties of her long-distance relationship with Floyd while she enlists Kenneth's help in locating on-the-lam Tracy. Meanwhile, Jack's impending marriage to Phoebe brings his mother, Colleen Donaghy to town.
After Burmy evolved into Mothim, Ash and co continue through the Eterna Forest where, along the way, they meet Gardenia, an overenthusiastic fan of Grass-type Pokémon. Ash declares a battle with her and she accepts. Will Ash win against this Grass Geek, and could she be the only one?
Special Earth Day Episode. Xzibit and the boys at GAS create an 800hp muscle car that runs on biodiesal fuel! It goes 0-to-60mph in less than 3.5 seconds! Guest starring CA. Gov. Arnold Schwarzenegger!
Miley focuses on Hannah's impending tour of Europe, instead of paying attention to her schoolwork. After Robby learns that her grades are suffering, he tells Miley that he'll call the tour off, unless she finds a way to bring her grades up. Jackson wishes he could fly the coop when Snowball, Thor's talkative pet bird, uses his gift of gab to get Jackson into trouble.
When Keith leaves town for a few days, J.D. expects that he'll finally be able to spend some quality time with Elliot. But he doesn't anticipate Elliot's old college friend dropping by. J.D. switches between hitting on her and competing with her for Elliot's attention. Meanwhile, Turk and Dr. Cox volley a hypochondriac patient back and forth since there's nothing wrong with him.
Lex and Clark get a chance to hash out their differences... when they're both trapped in a cave after an explosion, and Clark is unable to get them out without revealing his powers.
Sam and Dean allow themselves to be arrested in order to investigate a series of murders inside a penitentiary. However things get complicated when FBI agent Henricksen shows up to take over their case.
The attendings vie to be Chief. Two people who haven't slept together before, will. McSteamy's 60-day vow of chastity has a conclusion. We meet a boss, his assistant, and his wife. We also get to see someone being treated in the clinic. Derek has more questions about his relationship with Meredith. The chairman of the hospital board is admitted as patient. Callie confronts Izzie about her relationship with George.
Nick is torn between Hannah and Aubrey, as Aubrey asks him about his and Hannah's relationship. However, an unexpected visitor occupies Nick. Eddie makes a weird response to a "welcome surprise" by his friends. Physical Phil decides to make a huge change in his life. Ray tells Owen about Alison and Ikey's secret relationship.
Michael was in crisis mode at Dunder-Mifflin when a disgruntled employee at the paper mill put an obscene watermark on one of their most popular orders of paper. Michael called the staff into a meeting and pointed the blame on Creed, who was responsible for quality assurance at the paper mill and blew it off.
Earl tries to apply for a credit card but is declined because he doesn't have a job or a proper place to live, so he goes back to school to receive a diploma, where he realizes how hard it is for teachers to put up with badly behaved kids - just like the one he used to be.
With the discovery of an 11-year-old boy who went missing four years ago comes one of the most confusing case for Stark. During those four years, the young boy was living with his kidnapper and was identifying himself as his son. Sebastian must disprove the kidnapper's claim that he was in fact protecting the boy from abusive parents.
Sebastian must prosecute the murder of a predatory porn producer. The case is complicated by the fact that the killer is head of a women's shelter, who is being regarded as a hero by the media and the population of the city.