With Xana's attacks becoming more and more difficult to handle, the group contemplates adding another member to the team to make things easier. William is still the prime candidate, but Yumi still doesn't trust him. While Jeremie works on a way to get to Sector 5 directly, Xana makes a clone of him and has it take Jeremie's place. Meanwhile, Yumi has missed one too many classes, and will be expelled if she misses another. Odd and Yumi end up bugged by Jeremie's clone, preventing them from rescuing Aelita from the Scyphozoa. The Scyphozoa possesses Aelita, having her enter Code:Xana into the way tower, wiping out The Mountain Sector, cutting off access to Sector 5. However, Jeremie completes his program to send the group to Sector 5 directly.
When Veronica's term paper appears on the internet, she is accused of cheating by the TA and must prove her innocence. Meanwhile, Wallace has problems of his own when long basketball practices distract him from his studies, and Keith begins seeing Harmony Chase.
The team encounters logistical problems while trying to run tests on a 600-pound man due to his extremely large size. Meanwhile, House spends the night in jail after being arrested by Detective Tritter for various charges, including resisting arrest.
Jonas and Bob, on personal time, rescues a young girl from a cult leader as a favor to an old friend. Tiffy covers for Charlotte and finds herself in a lot of trouble.
Christopher treats Rory's college newspaper co-workers to lunch, but the meal ends abruptly when Rory insists they cover a breaking story.
Ray Tatum faces the blame of his team mates after Panthers' win in the game last week might be overturned. Defensive tackle Bobby Reyes is arrested by the police during a practice for beating a student. Coach Taylor and Buddy Garrity are questioned by the Texas High School athletic administration.Lyla and Tim surprise Jason by taking him to the lake.
This episode demonstrates the production processes for inflatable safety devices, Braille typewriters and carbon-fibre cellos, and shows how each is made.
Dr. Merrill Bobolit, who's out of jail, needs Sean's and Christian's professional services. Escobar Gallardo wants them to perform surgery on his face. And Matt tells his family that he's married and that he and his wife are expecting a baby.
Facing a crisis involving her son Micah, a distraught Niki reveals her recent personal struggles to a friend. Pushing aside his own issues at home, Matt assists Audrey's investigation into another bizarre murder, but their pursuit of mysterious serial killer Sylar takes an unexpected turn. After failing to act like a "superhero" when faced with danger, Hiro questions his heroism. Nathan and his wife Heidi strategize how to win the congressional election. Claire is shocked to learn where her missing tape wound up. Meanwhile, her father is disturbed by news from one of his associates.
As Michael reunites with Sara, Mahone and Kellerman strive to make sure they stay apart.On the road with LJ, Lincoln meets his father. Sucre tries to contact Maricruz. T-Bag has a reunion of his own.
The new principal, Mr. Edwards, decides that the best way to solve the issues between Chris and Caruso is to have them become buddies on a school field trip. When Rochelle's favorite earrings are missing Tanya is the prime suspect. Julius tries to find a Wayne Gretzky jersey for Drew.
Marshall goes on his first real date post-breakup with Lily. Not only do Ted and Barney try to warn him that this girl has got the crazy eyes, but Lily decides to do everything she can to find out about this her and break them up. Also, Barney gets a new name.
Christine's attraction to Ritchie's teacher causes a scene at a school fund-raiser--especially after she wins a playdate with the man.
In an effort to get Hank to shut up, Wanda and Brent convince him that the internet is the way to go, so that he can fully express all his thoughts. Things get difficult for Brent when he tries to keep everyone up to date on what's happening in Hank's blog, and finds that 'cheat sheets' are just so last century. Lacey is upset over the success of her friend and the food at The Ruby begins to suffer when Lacey feels that she just can't do anything right. Emma, in an effort to cheer Lacey up, invites Lacey to a BBQ, where a cut-throat game of horseshoes takes place. Wanda tries to help Davis save money on his taxes, but things don't go quite as planned.
Eight Canadians with poor driving skills are sent to an army base. They undergo challenges to enhance their driving abilities. Weekly, the most improved driver leaves. The last remaining participant is deemed Canada's Worst Driver.
After an accident where the driver was decapitated during a dangerous stunt, the evidence leads the CSI’s to believe it was more than an accident. While gathering the evidence, the CSI’s find they must go into the world of “sideshows.”
When Maya discovers Jabari has been skipping school and plagiarizing work, Lynn suggests Jabari may be acting out because of his new environment.
The Emperor of the darkest Yin has returned to life thanks to the Zodiac Master and Ling with four Powerbands. He sets a test for Ling to get the Powerband of the Golden Dragon. She goes to the Dragon Dojo and defeats Ang, Beingal and Xuan Chi, but the Band is not teleporting itself to Ling. Master Chin informs her to take the band from her brother, she must kill him. She cannot do it and ends up crying, tossing the Shadow Dragon Band across the room and telling Master Chin she does not want it anymore. However, Master Chin tells her she has passed her test. Master Chin tells Ang, Ling, Beingal and Xuan Chi that this was a test for Ling to see if she herself can be the Golden Dragon. Master Chin retrieves the Shadow Dragon Band, gets Ang’s Golden Dragon Band and tosses them in the air. The bands combine and fuse for a moment, killing the Shadow Dragon Spirit, then separate to become two Golden Dragon bands, meaning Ang and Ling are now twin golden Dragons. They now both go on to take on the Emperor of the Darkest Yin, along with all the other Temple Guardians.