1973’s “Enter the Dragon” helped kindle a love affair still strong today between American moviegoers and martial arts films. The iconic movie also shows a master at work in his true element. In the film, Bruce Lee’s penchant for kicking ass and owning all opponents who stand in his way is on full display. So, you may be asking: Who taught this man, one of the greatest fighters of all time? His name is Ip Man, and “Ip Man 4” features a clash between teacher and student at its heart.

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The project and its three preceding factual installments have all been directed by Wilson Yip and document Ip Man’s instruction of Wing Chun kung fu through years of war and other hardships. Yip himself has been nominated for five Hong Kong Film Awards in the Best Director category, with three of those nominations coming courtesy of the first three “Ip Man” films.

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Donnie Yen—likely most familiar to American audiences as Rebel warrior Chirrut Imwe in “Rogue One: A Star Wars Story”—returns as the title character. Yen is also joined once again by Danny Chan—himself a student of Lee’s martial art Jeet Kune Do and a seemingly mirror image of Lee—who plays the man himself. Scott Adkins (“Doctor Strange” & “Zero Dark Thirty”) also stars.

Here’s the synopsis:

Ip Man arrives in San Francisco, United States where his student, Bruce Lee, has upset the local martial arts community by opening a Wing Chun school.

“Ip Man 4”—the final chapter in the series—is set to premiere in the US on Christmas Day. Get ready for a showdown in the City by the Bay and take a look at the trailer below.