Once again Callie is forced to take part in her mom's latest crusade. They head into ranch country to camp -- bloodthirsty mosquitoes, stinky outhouses and all -- at a protest to save a rural school. Callie's grandmother shows up with her biker buddies and the singing grannies. Callie hates camping and wants nothing to do with the protest. To make matters worse, Callie's only possible ally, her cousin Del, is mad at her. The last time Callie visited, she was thrown from Del's horse, Radish. Callie claimed the horse was vicious and now Del's parents are forcing her to sell Radish. Callie wants to help her cousin, but she's terrified of the horse. Del is just as tenacious as the rest of Callie's family, and Callie is forced to admit that she's not going to be allowed to go home until both the horse and the school are saved.
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?
Turk needs cash, but he's allergic to his own sweat so getting a job is out of the question. Then he makes a discovery: Girls love dogs. Turk's friends will do anything to meet girls. Turk starts a dog walking business. His friends walk the dogs and Turk collects half the money. In an attempt to impress dog-loving Carly, Turk brags about his business in front of the school tough guy, Chuck. When Chuck learns the true nature of Turk's business and wants in on the action, Turk worries that he will lose his business and Carly's respect.
Fourteen-year-old Matt has only one goal in life: to become a hermit. He has no use for school, but he loves the solitude of the forest. When he hikes up to the cabin he built for himself, he discovers a mysterious stranger named Forrest has moved in. At first Matt doesn't connect Forrest's appearance with the rash of local robberies. Forrest seems to be the perfect hermit, and he teaches Matt the skills he needs to achieve his goal, including how to hunt with a crossbow. But when Forrest tries to kill an endangered Roosevelt elk, Matt questions the ethics of his new friend. When Matt discovers a stolen rifle in his cabin, he finds himself trapped in a dangerous situation.
The principal announces that the school is implementing uniforms, and Ian finds himself caught in a conflict. His friend Julia wants him to devise a plan to fight the decision, and the principal is determined to convince Ian the uniforms are a good idea. Ian wants nothing to do with the issue. While doing research for a social-justice class, he learns that the manufacturer of the uniforms is on the top-ten list for human-rights violations. When he tells the principal this, all he gets is a reminder that the penalty for refusing to wear the uniforms is suspension, and Ian finds himself caught in a whole new conflict -- one with himself.
Trevor, Nick and Robyn are ready to solve another mystery. When bobsledder Josh Gantz is accused of deliberately injuring a fellow competitor, he runs the risk of being thrown out of the sport -- right before the World Cup. Courtney Gantz asks Trevor, Nick and Robyn to help clear her brother's name. Can they find out who framed Josh? What is the meaning of the strange coded messages they keep finding around Olympic Park? Who eats orange bananas, anyway? The kids must unearth the clues in a race against time, before Josh's championship dreams end up on ice.
It's hard enough for Eve to adjust to a new high school without the extra weight she's gained over the summer. Her best friend is ashamed to hang out with her, and she's become the focus of a schoolmate's cruelty. Determined not to be "that pathetic fat girl" at school, Eve struggles with a diet and forces herself to join a mentoring program. The diet only makes her food obsessed, and she feels she is failing as a mentor. How can a lonely fat girl gain the confidence she needs to succeed?
Trevor, Robyn and Nick decide they have a mystery to solve when Trevor discovers a suspicious looking young man snooping around. They learn about missing research involving the use of carob beans to aid in cancer treatment-potentially valuable information. With a shady looking grad student, a bitter activist and an employee of a medical research firm to deal with, our amateur sleuths are faced with their greatest challenge yet.
Angus and his best buddy, Shahid, share a love of science and their robot, Gordon. But recently, the artistic Ella Eckles has had a peculiar effect on Angus. When a stink bomb at the school provides a chance for him to talk to her, he claims to share her interest in reading facial expressions and declares his ambition to become a crime-solving mentalist. He impresses Ella by identifying the stink bomber, but fails to mention he witnessed a scrawny kid setting off the bomb. When Ella's treasured sketchbook is stolen, she asks Angus to find the thief. Shahid thinks Angus should confess that he's not a mentalist, but Angus is certain he can learn to read people and recover Ella's sketchbook. He asks Shahid to help him investigate the suspects: Gaga Girl; the art teacher, Mr. Wilder; and finally, "scrawny kid." Equipped with rearview sunglasses and an informant who lurks in the washroom, the duo bungles their way through a series of encounters that alarm Shahid and provide Angus with some unfamiliar exercise.