Seventeen year old Tanya's plans for a carefree summer are derailed when her stressed-to-the-limit mom takes off for a wellness retreat and puts Tanya and her three siblings in the charge of a crotchety (and racist) old babysitter. The babysitter’s sudden death leaves the kids short on cash and reluctant to pull mom prematurely out of her much-needed R&R, so Tanya is forced to get a job. Posing as an adult, she gets a gig as the executive assistant at a fashion company and overnight is thrust into the world of adulthood and parenting.

When a hopeless romantic finds out her ex-girlfriend is newly engaged, she goes to her friends expecting to be coddled, but reality sets in when they call her out for prioritizing her past over their friendship.

It's been nearly 30 years since Dr. Sam Beckett stepped into the Quantum Leap accelerator and vanished. Now, a new team, led by physicist Ben Song, has been assembled to restart the project in hope of understanding the mysteries behind the machine and the man who created it. Everything changes, however, when Ben makes an unauthorized leap into the past, leaving the team behind to solve the mystery of why he did it.