When Renata is chosen to play the lead role in the school musical, students who used to ignore her start saying hello and congratulating her in the hall. She is happy until it becomes evident that Karin, a wealthy girl who expected to get the lead role, will go to great lengths to ruin Renata's reputation.
At a Battle of the Bands event, Ace and his best friend Denny notice that girls like musicians, no matter how dorky the dudes might be. Having, so far, been severely challenged when it comes to meeting girls, they decide to start a band. Ace discovers that he loves playing guitar and electric bass. While Denny tweets their every move and their clean-freak drummer, Pig, polishes everything in sight, Ace tries to write a song that will win at the next local teen songwriting contest. It's more difficult than he thought it would be. When Denny brings a great tune to rehearsal, Ace is devastated that Denny, who rarely practices, is a better songwriter than he is. The contest is only days away when Ace discovers that Denny stole the song, and Ace has to decide if winning is worth the lie.
Justin is fascinated with the aged guard dog at the corner store. He names it Smokey and sneaks the dog treats. Smokey belongs to a company that supplies working dogs to local businesses. Justin is thrilled to get a job working for Smokey's company, until he learns about the mistreatment of the animals. When Justin can't shake his suspicion that someone in the company is involved in a rash of thefts, he tries to quit. But Justin knows too much, and his boss won't let him go.
Rufus and his sister Alexa hate each other at the best of times. When Rufus's friend Phil manages to hypnotize Alexa, Rufus is ready to enjoy the power. They begin by ordering Alexa to be kind to her parents and Phil. The plan backfires when Alexa sweetly suggests canceling an expensive family vacation in favor of a week at home playing board games. Then Alexa turns on the charm with Phil and suddenly Rufus has to deal with a lovesick amateur hypnotist. Rufus is certain it can't get any stranger until Alexa, still in her hypnotic state, is kind to the brother she's always hated and Rufus is more confused than he's ever been.
The first flash mob Ian puts together himself is a sixty-plus person, four-minute pillow fight in a department store. His friend Oswald is thrilled with the event, but Julia, the one Ian really wants to impress, is still convinced that flash mobs are stupid. While Ian tries to prove Julia wrong by initiating flash mobs with political impact, Julia is busy waging war with the strict new principal at school. When Julia goes too far and gets herself suspended, Ian sees an opportunity for a relevant and persuasive flash mob.
When Trevor, Nick and Robyn visit the Royal Tyrrell Museum, Robyn is inspired to raise funds for a dinosaur dig that will close soon if it doesn't find funding. The kids are caught up in another mystery when a chain of suspicious events, including the disappearance of important fossils and a fraudulent discovery at the dig, leads them to wonder what's going on. Is the new visiting scientist behind the fraud, or did Robyn's enthusiasm to save the dig lead her astray?
Dan is not sure he'll survive the boring field trip to a remote heritage farm. How could a place with no running water, telephone or electricity be anything but dull? The farmer knows nothing about farming and is angry about having to conduct the tour. And what's with his tattoo? The teacher requests a private word with the farmer and then mysteriously disappears. After a messy attack of allergies, Dan is excused to find a tissue. He sneaks back to the school bus and discovers the driver and teacher have been bound and gagged. The farmer is really an escaped convict with nasty plans. Will Dan be able to find help in time?