In this sequel to "Flight from Big Tangle," Kaylee is furious about being left to spend the summer with a girl her own age, Jaz, and Jaz's uncle, Jack. All she wants is time alone with her dog, Sausage. Things change quickly, though, when Jack is injured after his helicopter goes down near a group of grizzly bears. Kaylee and Jaz must team up to save him, and Kaylee finds herself once again at the controls of a plane.
With seconds to the finish line, Dalen and Gole lead the distant world of Budap's annual Junior-Jet Race. Suddenly they are overtaken. Left behind in a cloud of mysterious purple exhaust, they realize something doesn't add up. Looking for clues, the two friends uncover a tunnel that leads them to Earth. They arrive in Port Angus, once a lively west coast fishing community. The fishing industry is dying, and Dalen and Gole find themselves embroiled in a sinister plot to steal fish and send them to Budap. Pursued by government agents and angry aliens, Dalen and Gole are in a race against time to save both their own distant world and the fishing community of Port Angus.
Joe and his friend Skip are enjoying the thrill of the Big Dip, a famous rollercoaster, until they learn the old man in front of them has been shot. The old man mutters with his dying breath something about getting a Margaret Rose to the police. Joe leaves the crime scene to get on with his life. But someone is desperate for the Margaret Rose and thinks Joe has it. When his sister is kidnapped, Joe is in a race against time to solve the puzzle.
Dan Hogg is thrilled when his uncle offers him some work at a food fair, because he wants money to hire a professional trainer to help him with his scrawny physique. His excitement vanishes when he learns that the job is dressing up in a hotdog costume and handing out samples. Every dark cloud has its lining, Dan discovers, when he, or rather Frank Lee Better, his mascot persona, gains the attention of a pretty girl named Brooke. The attention is great until Dan finds himself under attack from Cupcake Katie and a mysterious guy with a strange interest in Brooke. It's not until he's huddling in a bathroom in his tight white underwear that Dan begins to suspect Brooke's attention might be too good to be true.
Keegan Bishop, championship skier, is almost injured in a dangerous trap set for one of his teammates. Snowboard tracks leading away from the trap are the only clue as to who might be responsible. Keegan teaches himself to snowboard so he can find the culprit on the snowboarding slopes. When Keegan discovers that someone has been stealing snowboards and skis at Bear Mountain resort, and the girl he's just met is somehow involved, he must face his fears and test his new snowboarding skills in a run for safety.
Left alone for the first time on the island he calls home, Simon is looking forward to a day of personal indulgence. His sister Ellen only wants to make sure they get their chores done. Their parents are busy trying to convince the government not to close the lighthouse that the family operates, and it's up to the kids to make sure everything runs smoothly. Neither Simon nor Ellen is prepared for the mysterious and potentially dangerous visitor who brings with him an unexpected storm and a riddle that may lead to treasure - treasure that could help them save the lighthouse. Simon and Ellen have to work together to solve the riddle before the stranger or the weather destroys their chances.
Jim, Mickey and Lisa belong to a secret club called the Sewer Rats. Every Saturday the Sewer Rats reign supreme in paintball wars held in the city's storm drain system. The new kid, Carter, wants to join, but Lisa doesn't want him in the club. When Carter is hurt in his first paintball war, Jim and Mickey suspect that Lisa planned the accident. They try to confront her, but she runs into the tunnels just as a rainstorm begins. Jim and Mickey have to get Lisa out before the tunnels fill with water.
Wilf is convinced his parents want nothing to do with him. When he isn't in school, he is left to his own devices or shipped away to camp. But at fifteen, Wilf is adamant that he is too old for summer camp. When his parents ignore his protests and ship him off anyway, he knows how he will get their attention: He will escape from camp by canoe and spend the rest of his vacation alone in the woods, proving to his parents he deserves his independence. His plan begins to unravel when his cabin mate forces Wilf to take him along. Things go from bad to worse when a younger camper follows them and they all end up in a fight for their lives against the unforgiving river.
Nadia is playing for her local soccer team, and they have made it all the way to the national tournament - against some very determined opposition. Unfortunately, Nadia's challenges don't just come from her opponents but from her teammates as well. After their coach is injured in a suspicious accident and the threats against the team mount, it is up to Nadia and her younger brother Devin to pull the team together and take a run at the championship.
While Devin and Nadia spend summer vacation at a university camp for little kids Nadia as a counselor and Devin as an unwilling participant—their mother's research project is vandalized and her motives are questioned. Devin, Nadia and Simon stumble upon shady characters, corporate conspiracy and a plot to take over the nation's food supply with genetically modified fertilizer.