List of Best Friends Whenever episodes

Two best friends, Shelby (Lauren Taylor) and Cyd (Landry Bender), mess around in their friend Barry's lab and end up getting powers to time travel. They use the ability by thinking about what time they want to go to and hugging or high fiving each other. The two soon jump to the future, and find that they are strapped to tables in what they call "The Future Lab".

When Shelby and Cyd have to study for a big history test, they accidentally jump forward to the test. The two try to focus on not touching each other, and they soon get frustrated. Cyd suggests jumping forward and stealing a test to use "as a study guide". The two do so, but Shelby starts feeling very guilty.

When Cyd's dog Diesel gets into Cyd's laundry, he finds Cyd's favorite food: a pizza-slam-rito, which were banned from the health board in 7th grade. Cyd suggests that they jump back and get one. Shelby tries to talk her out of it, but Cyd can't be swayed. When Shelby "gives up", the two try to jump back to 7th grade, but their powers aren't working. When they go to Berry, Shelby reveals that she was "jamming their jump" because she didn't want to go. Cyd, refusing to give up, tries to surprise Shelby so they will jump. Eventually, she does so, and the past reveals a secret that hurts Cyd.

Shelby's science teacher Mr. Doyle pairs her up with a student called The Rob. When the Rob is being a jerk, Cyd trains Shelby to slam him. Shelby finally succedes, but feels bad. Mr. Doyle, who loves the hot gossip, tells the two that the Rob wasn't always a jerk, he became a jerk when some mean girl didn't return his romantic feelings. Cyd and Shelby jump back to try to get Rob the girl, and Cyd discovers that Shelby turned him down.

Guest stars: Larry Joe Campbell as Mr. Doyle, Randy J. Goodwin as Vance Carroway, Madison Hu as Marci, Brendan Meyer as The Rob

Cyd and Shelby go back in time to help Barry meet his idol. When they make it so Barry does that, they return to find that Barry has started a rock band because his idol ridiculed his theories, causing Cyd and Shelby to correct it; however, when they return to the present again, they find that Barry is an evil genius, and they go back to see that this is because they caused something else that made Barry and Naldo not meet.

Guest stars: Ben Giroux as Mr. Canavan, Mollee Gray as Roller Girl

Shelby and Cyd discover a strange logo all throughout Barry's lab that has a tie with their brief future experiences. Upon identifying the logo, they infiltrate the company GloboDigiDyne, where Shelby's father supposedly works. Meanwhile, Bret and Chet think that Cyd and Shelby are detectives and follow them into GloboDigiDyne at the same time when the company's CEO, Janet Smythe, is testing the new robots.

Special guest star: Nora Dunn as Janet Smythe

Special guest stars: Rowan Blanchard as Riley Matthews, Peyton Meyer as Lucas Friar

After Cyd and Shelby return from the trip to their kindergarten years, things start going wrong when they begin de-aging due to never having time traveled to when they were that young. Barry and Naldo must help them by getting them to drink a lot of milk. However, while it works on Shelby, it does not work on Cyd. It turns out that Cyd was scared of growing up. After a pep talk from Shelby, all ends well.

Guest stars: Larry Joe Campbell as Mr. Doyle, Lauren Lindsey Donzis as 9yr old Cyd, Amiah Miller as 9yr old Shelby

Cyd and Shelby discover that Janet Smythe is the one behind the future lab and seek to get rid of the lab and GloboDigiDyne. With Barry and Naldo's help, and an unauthorized biography of Janet, the girls find out Janet came up with the idea of wireless technology after being shocked by her desk lamp in 1991. When they plan to prevent Janet from coming up with GloboDigiDyne, the results will not be as they expected.

Special guest star: Nora Dunn as Janet Smythe

Guest stars: Kevin Symons as Norm, Madison Hu as Marci, Tamela D'Amico as Young Janet

Cyd is feeling guilty on Christmas Eve that Shelby's gifts are always a lot better and jumps in bed with Shelby in order to jump back to a year earlier before she moved in. Cyd does her best to keep Shelby from finding out that they jumped while Shelby was sleeping; however, Shelby eventually finds out. Meanwhile, against Naldo's wishes, Barry performs an experiment and causes a war between Bret's group and Chet's group. However, he later realizes that what he did was wrong and apologizes. His apology is accepted, but he ends up being tied up in Christmas lights.

Using their time travel ability, Cyd and Shelby plan to go to different events on the same night. Though it ends up backfiring then both boys they were dating end up at the same event. Meanwhile, Barry's laser accidentally causes Bret and Chet to switch bodies.

Shelby's adventurous Grandma Rita comes to visit where Astrid makes a claim that she had encountered time-travelers during her youth who set her up with Shelby's future gradfather Paul. This causes Cyd and Shelby to jump to 1958 to investigate and bring Grandma Rita and Grandpa Paul together. Meanwhile, Barry works to raise money when he parents plan to sell his RV. When he learns the buyer was a jewel thief, he and Naldo try to find the jewels to buy the RV from his parents.

Special guest star: Marion Ross as Grandma Rita

Guest stars: Mary Passeri as Astrid, Anna Grace Barlow as Rita, Garrett Westton as Paul, Casey Campbell as Vesper

Shelby and Cyd time travel into the future, only to learn their school has turned into a 'Dystopian Smythe-averse'. When Cyd goes off to look around while Shelby stays to talk with Drake, Cyd learns Drake is working for Janet Smythe and has frozen Barry and Naldo in suspended animation. Drake tells Shelby about Janet Smythe's inventions and the fact that she came to the school to watch a clock being installed. The girls get caught by Janet Smythe and try to jump back, only to learn Janet Smythe implanted a time travel blocker inside the school building. Shelby figures out the time travel blocker was placed in the clock, meanwhile Janet calls security to take the girls to suspended animation, when Cyd starts yelling at Shelby as she's been too obsessed with Drake the past day. They get into an argument and each get weapons, but throw them at the clock and jump back to the present. After Cyd tells Shelby how she truly feels, Shelby breaks up with Drake.

Special guest star: Nora Dunn as Janet Smythe

Guest stars: Madison Hu as Marci, JT Neal as Drake

Janet Smythe invites herself to the Marcus' house for dinner, and Shelby and Cyd grow suspicious. They learn Janet Smythe created a tachyometer to track where Shelby and Cyd have time travelled. They jump back to before Janet Smythe came over, however they learn she remembers every timeline she has been in, so the girls go to GloboDigiDyne with Barry and ask him to remove their powers. They learn that they only made things worse by giving away their powers, and they are powerless against Janet Smythe's inevitable future.

Special guest star: Nora Dunn as Janet Smythe

Janet Smythe confiscates Barry's lab equipment and takes Barry and Naldo hostage – for the secret to time travel. Shelby and Cyd look around Barry's lab for ways to help him and figure out the secret to time travel – they figure out a blue liquid gave them the ability. While trying to save Barry and Naldo, Shelby accidentally gives away the secret to Janet and she gets the ability to time travel, moreover Janet gets security to take them all to suspended animation. Meanwhile, Bret and Chet turn Barry's RV into an "exclusive" nightclub. As Norm enters the room where Cyd and Shelby are being held, he accuses them of lying and gives them a stern warning, but soon after realizes they were telling the truth and apologizes, then fights off the guards. Shelby and Cyd try to block Janet's time travels and end up fighting her with their time travel abilities. The battle gets rid of Janet's powers, but also creates a time rift, which future Cyd and Shelby jump out of and fight away Janet's goons. Future Cyd and Shelby win the battle and take Janet and the blue liquid back through the time rift, the timeline resets and nobody remembers apart from Cyd and Shelby. Later at Barry's lab, the girls tell Barry and Naldo the secret to time travel was the blue liquid, which turned out to be Naldo's old homemade hair gel. At the end of the episode, the time rift reopens and it looks like someone is trying to get through it.

Special guest star: Nora Dunn as Janet Smythe

Guest stars: Bryana Salaz as Daisy, Larry Joe Campbell as Mr. Doyle

Cyd and Shelby decide to take Daisy to the mall for their epic girls day, however the things they used to do are only for two people. Problems occur when both Cyd and Shelby are left feeling like the third wheel. Meanwhile Bret and Chet want a new look, and Barry and Naldo disagree about how to sell Naldo's novelty T-shirts.

Special guest star: Jason Earles as Dax Fraggins

Guest stars: Stephen Ellis as Jordan, Nika Williams as Zoe

Guest stars: Bryana Salaz as Daisy, Barrett Carnahan as Sebastian, Joe Ochman as Ulrich