TV series
Partners In Time
When their aspiring scientist friend Barry's invention goes awry, best friends Shelby and Cyd gain the power to leap forward and backward in time whenever they want – and sometimes when they don't. Now, they experience the twists and turns of friendship and must decide between fixing mistakes in the past or catching a glimpse of the future. While Barry and his assistant, Naldo, try to figure out how to replicate time travel for themselves, Cyd and Shelby use their newfound power to navigate high school life and Shelby's mischievous twin brothers, Bret and Chet.
Streaming, rental and purchase options
Checked Sep 5, 2026
Best Friends Whenever is available to stream on Disney+ in United States. You can also buy it from Apple TV. Use the direct links below to open the provider.
When their aspiring scientist friend Barry's invention goes awry, best friends Shelby and Cyd gain the power to leap forward and backward in time whenever they want – and sometimes when they don't. Now, they experience the twists and turns of friendship and must decide between fixing mistakes in the past or catching a glimpse of the future. While Barry and his assistant, Naldo, try to figure out how to replicate time travel for themselves, Cyd and Shelby use their newfound power to navigate high school life and Shelby's mischievous twin brothers, Bret and Chet.
Choose an episode, then use the watch options above for the show.
Episode 1
Best friends Shelby and Cyd gain the unpredictable power to travel back and forth in time when one of their friend Barry's science inventions goes awry. With their newfound power, the teen besties try to fix the mishaps that spoiled Shelby's plans to ask her crush Cameron out to the school dance.
Directed by Shelley JensenGuest stars Emery Kelly, Madison Hu, Mary Passeri
Episode 2
When Cyd and Shelby are having trouble studying for a difficult history test, they decide to jump ahead in time and nab the test questions. Meanwhile, Barry and Naldo find themselves in a hair-raising situation when they try to figure out how to make Barry’s invention replicate time travel.
Directed by Shelley JensenGuest stars Marisa Schovender, Jocelyn Ayanna
Episode 3
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.
Directed by Shelley JensenGuest stars Kevin Symons, Mary Passeri
Episode 4
Cyd and Shelby travel back to relive one of their favorite memories from middle school, but the moment winds up being totally different than what they both remembered. Now, they begin to question everything that happened on that particular day.
Directed by Shelley JensenGuest stars Jocelyn Ayanna, Eryn Nicole Pablico
Episode 5
Directed by Shelley JensenGuest stars Jeffrey J. Fernandez, Randy J. Goodwin, Brendan Meyer, Madison Hu, Larry Joe Campbell
Episode 6
When Cyd and Shelby attempt to change the past so that Barry can meet his childhood science hero, they travel to a period where Naldo and Barry are rock musicians instead of scientists.
Directed by Shelley JensenGuest stars Zackary Arthur, Stephen Full, Ernie Kamp, Lauren Lindsey Donzis, Amiah Miller, Kevin Symons, Mary Passeri
Episode 7
When the girls travel back to the 70's for help on a report, they land right in the middle of a turf battle between punk and disco kids.
Guest stars Ben Giroux, Marissa Heart
Episode 8
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.
Directed by Shelley JensenGuest stars Keith Blaney, Nora Dunn, Kevin Symons
Episode 9
Guest stars Rowan Blanchard, Peyton Meyer, Ken Joans
Episode 10
Guest stars Lauren Lindsey Donzis, Alan Maxson, Amiah Miller, Julia Butters, MacKenzie Dunne, Larry Joe Campbell
Episode 11
When the girls discover inventor and GDD CEO Janet Smythe is behind the future lab, they decide to fight back and travel to the past to stop Janet from starting the corporation. Their plan seems to work until they realize they also stopped other major events from happening in their lives, including them living together and Barry and Marci falling for each other.
Guest stars Madison Hu, Nora Dunn, Tamela D'Amico
Episode 12
Directed by Shelley JensenGuest stars Jim Meskimen, Madison Hu, Nora Dunn, Tamela D'Amico, Kevin Symons
Episode 13
Things spin out of control when 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.
Directed by David KendallGuest stars Kevin Symons, Mary Passeri
Episode 14
Cyd and Shelby use time travel to attend two different events on the same night; the plan backfires when they meet boys at both events.
Directed by Robbie CountrymanWritten by Debby WolfeGuest stars Jay Jay Warren, JT Neal, Carla Jeffery, Mary Passeri
Episode 15
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.
Directed by Shelley JensenGuest stars Marion Ross, Anna Grace Barlow, Garrett Westton, Casey Campbell, Mary Passeri
Episode 16
Diesel swallows a time travel tracker and disappears; Shelby and Cyd hurry to track him down before he's lost forever.
Directed by Shelley JensenGuest stars JT Neal, Madison Hu, Kevin Symons, Justin Lopez
Episode 17
Guest stars JT Neal, Madison Hu, Nora Dunn, Tamela D'Amico
Episode 18
When Janet unexpectedly invites herself over to Shelby's for dinner, the girls use the opportunity to find out what she knows about time travel.
Guest stars Joseph Aviel, Julia Butters, MacKenzie Dunne, Nora Dunn, Tamela D'Amico, Kevin Symons, Mary Passeri
Episode 19
While Janet tries to uncover the secret behind time travel, the girls decide they need to take her down once and for all!
Guest stars Brooke Newton, Christopher Aber, Stephanie Brait, Nora Dunn, Tamela D'Amico, Kevin Symons, Mary Passeri
Episode information updated Sep 18, 2026
Lauren TaylorShelby Marcus
Landry BenderCyd Ripley
August KampBarry Eisenberg
Ricky GarciaNaldo Montoya
Benjamin RoyerBret Marcus
Matthew RoyerChet Marcus
Rowan BlanchardRiley Matthews
Emery KellyCameron
Disney ChannelUnited States
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