Cat cafe owner Xia Xia encounters a substandard cat climbing frame collapse, and black-hearted supplier Sun Jinbao takes the opportunity to force debt collection, pushing the cat cafe to the brink of bankruptcy. Ancient architecture restorer Liang Siyuan steps forward, determined to build a sturdy wooden tower for the shop using large carpentry pure mortise and tenon techniques. However, facing the impact of cats moving about on orderly beams, the craft challenge of easily fragile miniature components, and malicious blockades from rivals, the road ahead is full of difficulties. Whether he can resolve the crisis, break through shackles, and give millennium-old intangible cultural heritage wisdom a new lease of life in the bustling worldly atmosphere of human-pet coexistence is full of unknowns and expectations.