Royd Tolkien, the great-grandson of "The Hobbit" and "The Lord of the Rings" author J.R.R. Tolkien, is sharing a deeply personal story about his younger brother in the documentary "There's a Hole in My Bucket." Royd's brother, Mike, died in 2015 of ALS.

He secretly created a list of 50 challenges for Royd to complete, with each challenge to be revealed one at a time after his death.

"I had two instructions from him. He said, 'You make films. Make a film of this.' And the second one, 'If you're going to use your name for anything, use it to promote this,'" Royd said.