Jenny and the team, with unwanted help from Danny, attempt to stop London from becoming engulfed by a pandemic when they face an incursion of a deadly, fast-spreading fungus from the future that turns its hosts into primal monsters. Meanwhile, Sid the Diictodon has escaped Connor's custody into the ARC and is causing calamity, and Jenny learns the truth about Claudia Brown.
A case from Catherine's past is reopened when a man who has been in prison for 18 years challenges the evidence that convicted him.
The chef's taste buds are put to the test when Chef Ramsay prepares three dishes for them to try. They are then given thirty minutes to prepare just one of the dishes, the fish stew, identifying the ingredients only by taste. The winner enjoys an afternoon with Ramsay, taking an amazing ride in a bi-plane. The losing chefs are punished with polishing crystal and cutlery, cleaning the carpets and prepping for the evening's service. During the dinner service Chef Ramsay tells them they need make it all the way through not only for themselves, but for one of their guests, who plans to propose to girlfriend during the dessert course. Two chefs rise to the challenge, but two struggle throughout the night. One is ultimately eliminated and then Chef Ramsay announces a surprise, to be revealed in the next episode.
Ash and Dawn enter a Pokemon Ping Pong Contest. After the contest, a trainer approaches Dawn and asks if he can train Ambipom for Ping Pong Contests.
Ben and John are called to the home of a man who wants them to find his dog, and another in which a drug overdose led to homicide. Chickie and her partner, Officer Bill "Dewey" Dudek, butt heads after he makes some poor decisions that may have repercussions, and later, Dewey finds himself in an embarrassing situation.
Will decides the boys should reinvent themselves as trendy clubbers and they drive to London in Simon's car, though to gain entry to the best club in town Simon must swap his trainers for a tramp's filthy old shoes. Neil cuts his penis weeing into a can and when Jay inspects the damage they are ejected as perverts. Can things get any worse for the lads? The wheel-clamping of Simon's car might provide the answer.
Leslie arranges for a reporter to do a story about her park project, but she and her committee have the worst time staying on topic. She then calls Mark to help her save the story, but it ends up hurting more than helping. Meanwhile, Tom does all he can to suck up to his boss.
Lois believes that she needs a big story to secure her reputation as a star reporter but the red/blue blur continues to elude her. However, after Chloe is mugged, Lois steps in to fend off one of the attackers and uses the opportunity to pretend a new superhero, Stiletto, has come to town and is giving exclusives to Lois. Clark is concerned Lois will hurt herself pretending to be a superhero but after he is captured by thugs with kryptonite, Lois steps in to save the day.
Booth's detective friend from Tokyo, Ken Nakamura, calls him when his sister, Sachi, goes missing while in Washington, D.C. With Brennan, Booth investigates her disappearance.
Meet the Winchester boys: Dean, Sam and... Adam. The Winchesters discover they have a younger half-brother, whose mother vanishes just as a long-dormant grave robber renews his ghoulish career.
Addison sends a pregnant woman to St. Ambrose for help from Noah after she experiences heart complications. Meanwhile, Sam begins to rethink his friendship with Naomi; Pete and Lisa's relationship becomes increasingly complex; and Sheldon takes a stand.
Michael's new company struggles to make early morning deliveries while the office tries to get their expense reports in on time after Angela enforces Dunder Mifflin's policy.
As she endures aggressive treatment for her cancer, Izzie throws herself into planning Derek and Meredith's wedding.
When a local girl’s death is ruled a suicide, Abby challenges her father, the Sheriff, to investigate what really happened. As the wedding approaches, Trish must come to a decision about Hunter.
Jack goes shopping for an engagement ring, for Elisa, with Liz. Elisa tells Liz a secret, and a prank results in an injury back at TGS.
Earl tests the faith of a former gangbanger-turned-born-again reverend, whom he's wronged many, many times.
It is time for the class photo. But Timmy finds it hard to keep from getting dirty, especially since the camera isn't working right. So the class has to try to keep him clean.
Timmy is having fun on the tricycle, but Ruffy does not have much luck learning how to ride it.
When Assistant U.S. Attorney Zoe Landau, Lightman's ex-wife and Emily's mother, enlists Lightman to help investigate an arson case in which the only eyewitness is a 5-year-old boy, it quickly becomes clear that she and Lightman still have feelings for each other. Meanwhile, Foster and Torres question a rapper who is suspected of murder.