Doctor Who: Meet the New Companion in First Season 10 Trailer

What’s that in your stocking? Oh, it’s a TARDIS.

Ahead of its annual holiday special, Doctor Who on Sunday released the first official trailer from its upcoming Season 10.

In the 50-second spot, the Doctor’s new companion, Bill (played by Pearl Mackie), introduces herself, briefly explains their timey-wimey situation and asks questions. A lot of questions.

Along the way, we see Daleks, strange worlds, a raging war, the return of Matt Lucas (Little Britain) as Nardole, and someone who questions if the Doctor has lost his mind.

“Yes, completely,” the Time Lord answers. “But that’s not a recent thing.”

The upcoming season, which will air in 2017, will be the final one for showrunner Steven Moffat. In January, the series boss said he would leave the series after Season 10. Chris Chibnall (Broadchurch) will take over showrunning duties starting with Season 11.

This year’s Christmas special, Doctor Who: The Return of Doctor Mysterio, airs tonight at 9/8c on BBC America. Justin Chatwin (Orphan Black/Shameless) stars as the titular vigilante.

“What we’ve sort of made here is a new ironic, goodhearted superhero movie… which hopefully they’ll want to repeat every year. As long as I get a cut of it,” star Peter Capaldi joked at this year’s New York Comic-Con.

Press PLAY on the video above to watch the trailer, then hit the comments with your thoughts!