The Four Sons are the focus of one of the most beloved and intriguing stories in the Haggadah, the book read and sung at the Passover Seder. The story is beloved despite being just a short fable about four boys at the Seder table and how they're treated by their father. It's intriguing because that fable has been revised relentlessly over the centuries--in words, in art, in music--until it must be right up there with Shakespeare's plays among the most re-interpreted tales ever told. Why so many versions? Because Passover and its Seder are really about passing on heritage--or any belief--to your children. And The Four Sons story suggests how to do that, as many suggestions as there are versions. The documentary shows the variety of those versions as it moves constantly from an actual Seder to Four Sons stories in art, words, and music to interviewees from ages 17 to 70... and back to the Seder. Let "THE FOUR SONS AND ALL THEIR SONS usher in Passover this spring, just as its producer's "18 Voices Sing Kol Nidre" has greeted the High Holidays in recent autumns.