When the cold head teacher reunites with his former window designer, an ambiguous game triggered by his sister's academic crisis unfolds on a rainy night. In order to protect her sister, Xia Zhiyu was forced to reunite with Chu Qingyun, but found that the other party was still wearing the token of love from back then on her wrist. The old misunderstanding turned into an undercurrent, pushing two unhealed hearts into the whirlpool of fate again. In the intertwining of neon and starlight, they use design drawings and mathematical formulas to compose a new love equation.
Purpose: Let true love be reborn in the resonance of souls