The black hole energy creates a replica of Josie, using DNA from her chewing gum, resulting in the "birth" of Josie 2. With the sudden arrival of her mysterious mom, Kelly Trent, Josie is forced to confront her worst fear: does her mom actually care about her?

Lucas finds an old radio dish in the basement of the school, and discovers that it can receive radio signals from the future. A confusing broadcast is received, and he learns that Blake Holsey suddenly disappears. The Science Club must win the battle against destiny and change the future, or lose all that they hold dear to them.

Josie doesn't like her lack of height. Josie learns the advantages of being shorter than everyone else when she actually shrinks to being four inches tall, despite her efforts to grow.

Victor Pearson wants to run some tests on the school.

Welcome to Blake Holsey's first annual pizza party! Attendance by all is required, but Josie, Corrine, Marshall, Lucas, Vaughn, and Professor Z suspect Durst wants to keep them occupied while Victor Pearson initiates a devious plan.

Their suspicions are confirmed when they discover a team of scientists outside the school. Josie is amazed when she sees that one of them is her Mom, Kelly Trent. Then, Kelly conducts tests which send Josie into the Wormhole, taking her back in time to three hours earlier!

She must inform her Mom about the potential dangers of a fatal discharge of electricity! And she must race against time...

Marshall is sick, feverish, and to make matters worse he uses all of his spare time working on a new money making scheme. While he feels awful, his new venture, which was doing extremely well and making profits, bottoms out.

Bizzarly, even the school develops symptoms of Marshall's infection. Some parts are too cold, others overheat, sneezes and coughs begin occurring from deep inside the school and a greenish slime extrudes from the interior, exactly like Marshall's symptoms. But why does it occur? And when will it stop?

Vaughn gets beaten at an arm wrestling match and Lucas is jealous of the amount of attention Josie pays to Vaughn. But when Lucas and Vaughn gain confidence in themselves after Vaughn wins another arm wrestling match and Lucas beats a rival at chess, could these new health bars play a factor? After the two score very poorly on their midterms and lose self confidence, Josie convinces Professor Z that Lucas and Vaughn need to get a better diet.

BHH curfew is five minutes away and Josie is nowhere to be found. Corrine worries because Josie will break curfew by being late and Lucas is aggravated because Josie forgot that they have a science project to finish. And where exactly is Josie? Her first date with Vaughn! But at the very moment they almost kiss, she hears the BHH curfew bell. And she quickly enters BHH where she runs into Durst as she tries to beat curfew and then discovers that her watch can stop time. Actually, from Josie's point of view, time appears to stop for everyone except her. What happens next? Will Josie be suspended in time forever or rescued just in time?

Lucas cancels a long-weekend fishing trip with his father so that he can stay at Blake Holsey and investigate Victor and Vaughn. While setting up a surveillance camera in Professor Z's lab, he stumbles upon a secret compartment that holds a strange device. When activated, the device turns the school into a tesseract- causing the school to begin folding in on itself...

Marshall is testing a rocket but when he launches it, it fails to come down. Instead, a large silver sphere falls from the sky. When the gang go to investigate, the sphere dissolves, leaving behind a strange device. They take it to Z, who also has no idea what it was. When Josie touches it a panel opens up, and a timer begins to count down. Now the science club has 26 minutes to figure out what it does, and what the connection is to Vaughn...

Marshall is busy working on promotions for his band, Magnet 360. He is supposed to write a 1500 word essay for the school paper for his community service, however he runs out of time and ends up filling the space with predictions, thanks to Z's inspiring lesson on horoscopes and The Bell Curve.

Unfortunately, he forgets to check his work, and the prediction that 'a member of the science club will diet' becomes 'a member of the science club will die.' It doesn't seem to be a problem until the other predictions start to come true. Now each member of the science club has to work out how to cheat death...

Josie suddenly finds herself in 1879 by way of the wormhole. Vaughn, Lucas, Corrine, and Marshall come to her rescue. All return to the present except Vaughn, who discovers he has returned to a much different yet familiar reality...

Josie is determined to find and rescue Vaughn at all costs. Josie locates Vaughn, and they return to the present. Josie believes everything is her fault because Victor stole the ball from her. And decides she must prevent the accident at Pearadyne from occurring. Only, once she does, everything may never be the same, and she faces an unexpected reality.