Siyu works as a maintenance worker in the seaside breeding area to fasten and tighten floating ball knots. His hands are rough and his palms are covered with deep marks. Five years ago, her lover Lin Shen was in debt and walked away quietly, leaving her alone to guard the sea and three hundred floating balls. She tied all her loneliness and anxiety into the knot, tightening it tighter and tighter until the float shell cracked one after another and the knot slipped in the tide. When Lin Shen returned as a new material dealer, Siyu discovered that a knot that was too tight could not keep a floating ball, and a knot that was too tight could not keep people. In the current storm, she must relearn the measure of "looseness" and find a way to defend the mountains and seas as well as herself between tightness and flexibility.
