In season 15, Ncuti Gatwa takes over as Doctor Who, traveling through time and space with his new companion, Ruby Sunday, played by Millie Gibson.

Gatwa, who previously starred in Netflix’s Sex Education and was one of the key Kens in last summer’s box-office smash Barbie, sets the stage for a new style of Doctor Who when the long-running anthological series returns May 10.

“Who are you?” Ruby asks, after Who invites her to travel with him. “I’m the Doctor,” he responds, with the confidence only the ageless Doctor can have.

Set to a version of David Bowie’s “Changes,” Ruby and the Doctor go all the way back to the time of the dinosaurs, where they learn that stepping on a butterfly really can create cataclysmic change, to Regency-era England (with Doctor Who premiering just six days before the new season of Netflix’s Bridgerton) to the groovy sixties and on into a war-torn future Earth and the outer realms of space.

“Everything is possible,” the Doctor assures Ruby, even though things seem to have escalated quickly.

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Besides Gatwa and Gibson, Doctor Who stars Indira Varma (Game of Thrones) as the Duchess as well as Callie Cooke, Anita Dobson, Yasmin Finney, Michelle Greenidge, Bonnie Langford, Jinkx Monsoon, Jemma Redgrave, Lenny Rush and Angela Wynter. The series is produced by Bad Wolf, with BBC Studios for Disney Branded Television and BBC.

Doctor Who premieres May 10 on Disney Plus in the U.S. and around the world. In the UK, Doctor Who debuts Saturday, May 11 at midnight on the BBC iPlayer before airing later that day on BBC One. New episodes drop Fridays on Disney Plus and Saturdays on the BBC and BBC iPlayer in the UK.

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