A new generation of scientists inherits the leaping accelerator that started it all, and the result is a series built entirely around not knowing who, or when, you will wake up as next episode.

What is Quantum Leap about?

Quantum Leap centers on a research team that reactivates a time-travel program capable of dropping a person into someone else's body at a random point in history. Each hour-long episode places the lead into a fresh identity, a fresh crisis, and a fresh set of people who have no idea their friend or colleague has actually been swapped out. The show pairs case-of-the-week problem solving with a slower-burn mystery about why the leaps are happening and who, if anyone, is steering them from behind the scenes. Raymond Lee anchors the ensemble alongside Caitlin Bassett, Mason Alexander Park, Nanrisa Lee, Ernie Hudson, Eliza Taylor and Peter Gadiot, with the tone shifting from comic culture-clash to genuine tension depending on which decade, and which body, the story lands in that week.

About the cast

The ensemble splits between the control-room team monitoring the leaps from home base and the people the lead meets in each new era. Ernie Hudson and Eliza Taylor give the home-base scenes their own throughline even in episodes where the time-jump storyline is doing something completely different, and the wider cast rotates through new roles as the identities change week to week.

Context & significance

Body-swap time travel is a familiar science-fiction device, but a weekly structure built entirely around it is unusual for an American network drama, and it lets the writers reset genre, setting and stakes every single hour without breaking the overall arc. At roughly sixty minutes an episode, there is room for both the immediate case the lead has landed in and the ongoing question of who built the accelerator and why it keeps sending him out.

Watching Quantum Leap on Ktime

Quantum Leap streams on K-Time with Persian dubbing and Persian subtitles both available, so viewers can choose the language that suits them best. The site's Farsi interface makes it easy for Persian-speaking households to browse and queue up episodes, and watching requires only a free K-Time account login, with no separate purchase needed.