A cheerleader who was once Amanda's rival is released from juvie, and still holds a grudge against her old foe; suspecting that the rival cheerleader will cause problems, Mike and Owen try to catch her doing wrong by posing as cheerleaders.
On the verge of finally ending the alien invasion, the team discovers the price of victory may be the entire planet Earth!
Sacramento police officers are witnesses to an unexpected proposal after they haul in a suspect and his girlfriend; a burglary is stopped; and a domestic disturbance is broken up in Amarillo, Texas.
When Wendell seeks Vinnie's advice about asking a girl to be his valentine, it gives Vinnie an idea about how to approach Taryn.
Jonathan welcomes more celebrity guests, including current Doctor Who Matt Smith, Gavin and Stacey writer and star Ruth Jones, and Welsh rockers Stereophonics, who also perform live at the end of the show.
After Troy deals with some small-minded bullies at school, the Rangers square off against a more dangerous bully, Creepox.
Jeff is caught up in a marital dispute, and Robyn breaches patient confidentiality.
When Chuck accidentally knocks Red off a precipice, the race is on to save him before he hits rock bottom.
The Incurseans take control of Earth, so Rook and the Plumbers must mount a resistance while Ben is missing.
The Green Lantern Corps makes their final stand against Aya.
Plankton is in jail, but he teams up with his cellmates to break out, and steal the Krabby Patty formula.
The Incursean Armada, with the help of Dr. Psychobos, have invaded the Earth.
During a rare rainy Los Angeles evening, Martin and Jake head to Breakwire to enlist the help of his old friend Dutch, a grizzled ex-Navy Seal. When the lights go out in the building, the storm is suspected, but all hell breaks loose when Guillermo enters the premises. As the intensity ratchets up and people turn up dead, Jake’s ability to communicate with Amelia proves to be critical in defending his life.
When Drew moves out of Fiona's loft, Fiona gets a job and discovers the joys of Tweeting. She later comes across a burglar in her home. Meanwhile, Zig is tired of everyone talking about Campbell and acts out in French class. Also, Dallas finally gets Alli to go out with him but hides the fact that he has a child.
As Crassus leads an onslaught against the rebel-occupied city, Gannicus finds himself trapped behind enemy lines. Tiberius is tasked by Crassus to hold a celebration in honor of a man he despises.
As Makishima works on reprogramming the virus, both Kogami and the MWPSB arrive at the factory, with Kogami instructing Akane that they need to shut down power to the facility to bypass the security. Prior to arriving, Akane manages to convince the Sibyl System to keep her Dominator on Paralyzer mode with the safety unlocked regardless of Crime Coefficient to use as a trump card against Makishima and Kogami. After the power is shut down, Kogami sneaks into the facility whilst Akane and Yayoi head to the control room in case Makishima attempts to activate the emergency power. Finding the control room empty, Akane comes to realise that Ginoza and Masaoka are in danger. As Ginoza becomes trapped under a container after tripping up a trap, Masaoka comes face to face with Makishima. Although Masaoka appears to get the upper hand, Makishima threatens to blow Ginoza up with a stick of dynamite, with Masaoka ultimately sacrificing himself to save his son.
Frank has to transport a young hacker to her new employer. But the employer is not the only one that is interested in the girl. Meanwhile, Frank has a lunch date with Juliette that doesn't exactly turn out to become a romantic moment.
When Mabel befriends a cute merman trapped in the public pool, she's determined to help him out. Meanwhile, Dipper decides to volunteer as a lifeguard to see Wendy.
While trying to foil a Kraang invasion plot, the Turtles are hunted by a giant cockroach.
Amanda holds Alex hostage and tells Nikita she will release Alex in exchange for Ari. Michael assigns Nikita and Sean to handle the exchange of prisoners, but Ryan adds Owen to the team at the last minute, which makes Michael suspicious. While in captivity, Alex befriends a fellow prisoner named Larissa and vows to break them both out of the jail, which ultimately conflicts with Nikita’s plan, forcing Alex to choose between Nikita and her promise to Larissa.