Legend has it that after people hang themselves, the grievances are the heaviest, and the grievances will accumulate on the knots. The effect is to appease evil spirits and appease the people. The coastal area of ​​Taiwan will hold a ceremony to send the knots to the estuary. "Send a sputum", and later changed to "send a meat sputum" in order to respect the dead. Seeing that the danger is approaching, Jiawei decided to ask the Master for help, but found that the source of everything came from the secret of the book that was deeply buried in the heart for ten years....what can Weiwei unlock the knot of the book and protect himself? And the life of a loved one?