Alvin borrows Simon's invisibility suit, but gets trapped when the zipper gets stuck.
David's behaviour grows increasingly erratic following his decision to stop taking his medication.
Grammy Award-winning duo The Chainsmokers join Rob, Chanel and Steelo to cringe at some "Biters," ride "Stolen Mattresses" and marvel at the magic of real life "Teleporters."
Ken is tormented by an old professor who comes in for treatment. Alison has a new assistant who is too chatty. Damona ends her relationship with Eric and tries to take a new relationship with Pat slowly.
The Titans are determined to find out what happened to the missing two o'clock hour during Daylight Saving Time.
Mac and the team travel to Hawaii to help out when an earthquake strikes and partner with Chin Ho and Kono to rescue a group of government scientists trapped in a building about to collapse.
The tables are turned on Cassandra when Owen traps her in a dangerous game of cat-and-mouse, revealing that he's not the only one who needs to learn a thing or two. Claire spends a relaxing night out.
Adam Hills, Alex Brooker and Josh Widdicombe examine the biggest, most entertaining news stories and make use of the #isitok twitter handle, where viewers tweet in edgy current affairs questions that other shows might duck. In this edition, the boys are joined live in the studio by comedian Harry Hill and physicist Professor Brian Cox.
Buddy becomes a repo man so he can get his stuff back from Big Tex. Big Tex steals Buddy's driving secrets, but Buddy has a plan for revenge.
The creepy guy following Buddy reveals his identity, then teams up with Tex Jr. The gang thinks they have one week left to live.
Buddy and Tex Jr. go head-to-head to see who can beat an old video game first. Buddy starts a stunt show, but Tex Jr. swoops in and steals his thunder.
Cannonball calls on Darnell to investigate a hit-and-run accident. Buddy and Darnell help hapless Tex Jr. take care of himself.
Weasel brat needs a "bro," but Buddy and Darnell aren't much help. Buddy and Darnell convince the town to be healthy, but they have an ulterior motive.
An evil impostor Buddy causes problems all over town, landing the real Buddy in trouble. Buddy starts a rivalry with pizza-delivering beavers.
A team of intergalactic warriors fights to protect the Earth, but the combination of three highly trained beings and one quirky young boy leaves the team struggling to overcome the dangerous scenarios that are put in front of them.
After Mike encourages Vanessa to branch out her tutoring business, she takes his advice but gets frustrated when he gets a little too involved. Meanwhile, Kyle is determined to be like the other Baxter's and become a high-powered entrepreneur.
Jamie and Eddie suspect foul play when they respond to a distress call from a woman having an allergic reaction to her lifesaving medication, and learn that her husband is an EMT assigned to take her call, but didn't respond. Also, Erin learns that a man she convicted years earlier might be innocent of the crime, and Frank handles a PR crisis in his department when an exposé on Garrett Moore is published.
On a day of spontaneous adventures, Mickey and Gus open up about their pasts and begin to let go of their fears.