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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 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.
Cyd and Shelby discover a major clue to the future lab memory and it is somehow tied to Barry's science mentor Janet Smythe, who also employs Shelby's dad.