For a craft, a hundred years is a history of inheritance, but for a person, a hundred years is a real life circle. With more than a dozen groups of staff members, a hundred thousand kilometers of travel, a year of follow-up, Life Is a Belief searched for more than ten ancient crafts and small shops that last a hundred years, focusing on those whose fates and crafts are entangled together. From their normal lives just like us, the documentary wants to explore how crafts can be a companion to their lives and where on earth does the power that underpins a craft to pass on come from?