Watch: Barry Sanders movie trailer asks the question we all want the answer to

Watch: The Barry Sanders movie trailer lays out the question of why he retired in his prime at age 31

Prime Sports Video released the trailer for the upcoming documentary film about Lions legend Barry Sanders.

“We’ll never see something like Barry Sanders again,” the trailer begins, and then we’re instantly reminded of just how true that statement is.

“Bye Bye Barry” will tell the intriguing story of Sanders’ incredible career as a Detroit Lions running back and icon, in the words of those who played with him and against him, and those who covered him in his prime.

It will also feature Sanders himself discussing what everyone wants to really know: Why did he walk away at 31?

From the press release:

Twenty-four years after the shocking decision to walk away from the sport, NFL Films joined the 55-year-old Sanders and his four sons on a trip back to England to explore his career, revisit his upbringing, and tackle one of the greatest mysteries in sports history: Why did he retire when he did?

The movie debuts on Nov. 21 on Prime Video.