Follows teenagers Cyd and Shelby. When a science experiment goes wrong, they become unstuck in time leaping forward and backward in time. Teenage genius Barry then helps the girls master their new power.
When Cyd tries to plan a special thank you for the Marcus family, Shelby steps in to help with hulu dancers, a rock band and jugglers and everything somehow leads to a big misunderstanding and a huge kitchen disaster.
Cyd and Shelby go back to change the past so that Barry can meet his childhood science hero. However, when they return, they realize Barry and Naldo have changed as well and are now terrible rock musicians instead of aspiring scientists.
When the girls are assigned to do a report on the 1970s disco era, they decide to travel back and experience the 70s firsthand and land in the midst of turf battle between the disco and punk kids.
Cyd and Shelby discover a major clue to the future lab memory and it is somehow tied to Barry's science idol Janet Smythe, who also employs Shelby's dad.
Cyd and Shelby take a bite out of the Big Apple when they use Barry's new invention to teleport themselves to the NYC Central Park Spooktacular only to end up trapped in a haunted house.
When Cyd and Shelby go back to kindergarten to celebrate their friendship anniversary and relive the day they first met, they begin to change back to their five-year-old selves.
Cyd travels back to Christmas the year before to try and figure out the perfect gift for Shelby. Meanwhile, Barry and Naldo's Winter Wonderland experiment sparks an elf war, with Bret and Chet leading the charge.
When Shelby's adventurous Grandma Rita comes to visit, the girls learn time travelers were responsible for setting up Shelby's grandparents and they jump to the 1950s to investigate.
The girls discover that their future-selves have asked to lose their time traveling abilities; they leap ahead to see that Janet Smythe is involved; Barry learns that Marci is planning to dump him.
