As the twin siblings Lindy and Logan Watson take their first steps in high school, they set out to impress the athletic popular kid Seth Wall. As each of them decides to throw a party while their parents are away, things don't go as planned.
When Delia's mom makes Delia get a job, she ends up working as a hostess at the gang's favorite restaurant. But when Delia proves to be not that good, Lindy steps in to take her place and finds herself in over her head.
When Logan and Garrett decide to bring a new male member to the gang, they invite a guy named Tom Bigham. But they soon come to regret their choice, as they try to find a way to get rid of him.
Lindy finds herself in a tough situation when she sets out to hide a letter she wrote to herself when she was in third grade, where she wished she had better friends.
When Logan and Jasmine come up with a spray that makes vegetables taste better, they are given a chance to be on a show that could make them famous. But when Lindy becomes jealous of their success, she tries to be with them on the show.
When Lindy wins a competition at Rumble Juice for coming up with a new smoothie, she runs into a problem with a guy named Cole who wants to ask her out. As Logan is facing a hard time with his book report on The Odyssey, he ends up clashing with Delia.
When the gang goes to a snowboarding cabin with Bert and Nora Watson, Lindy has a crush on the snowboarding instructor, while Logan is tasked with looking after the cabin.
As the school's spring dance approaches, Sherri and Lindy butt heads as they set out to make the other miss school in order for the other to be the only one with the perfect attendance record, while the other gang members are having their own issues with finding a date for the dance.
As Lindy works as an intern at the Chicago museum, she finds her job not quite as she imagined, while Logan gets a much interesting job also at the museum. Delia tries to prove that she is a decedent of Nefertiti.
When the gang goes on a school trip to visit the White House, they land themselves in all sorts of trouble, including being accused of kidnapping the president's dog.
As Logan freaks out after an accident causes his cell phone to stop working, the gang decides to make a pact not to use their phones for 72 hours to support Logan.
Lindy and Logan take part in a twin telepathy study after they are believed to have special powers that enable them to communicate with one another with their minds.
As Logan goes out with a girl who turns out to be the principal's daughter, Delia tries to make contact with aliens after feeling that Earth boys are below her standards.
Lindy decides to mind her own business after realizing that it only gets her in trouble. Delia's advice to Garrett backfires. As Jasmine starts to have feelings for Logan, he ends up going out with Jenna.
After Lindy accidentally ruins her father's football signed by NFL legend Dick Butkus, she sets out on an adventure along with Logan to figure out a way to fix the situation.
Logan fakes an injury to get out of a charity marathon after finding out that his friends make fun of the way he runs. After Delia accidentally gets the clueless Brenda fired from Rumble Juice, she sets out to find her another job.
After Jasmine is chosen to host the school's morning announcement videos, her friends find out that her style of presenting is dull, so Logan lends her a hand by being her co-anchor.
Delia sets out to win an award for the largest pumpkin in the Halloween festival, after spending 6 months growing a pumpkin. Garrett finds out that Jasmine has feelings for Logan.
After Garrett goes bike riding with Lindy, things don't go as planned after their bikes get stolen. As Garrett ends up getting arrested, the gang tries to help him out.
After Logan clashes with Lindy during Christmas, his wish that he never had a sister comes true, leaving him to see how his life would turn out without her.