Lin Qingxian, a top student in the Department of Physics, whose life creed is "everything can be calculated". He developed an AI model and tried to use algorithms to find the "optimal solution" for love - until he met Su Nian in a cafe. Su Nian, a talented woman from the Department of Psychology, is writing a paper on the cognitive dissonance of rational people in irrational emotions. She felt that Lin Qingxian was a perfect sample. He regarded her as a collaborator to complete the data, and she regarded him as a control group for the paper. A "love experiment" contract was concluded.
They completed various strange tasks together, gave up calculation and ran hand in hand in the heavy rain, and waited for a pot of gypsophila to bloom in the snow on a winter night. He used a "Variable Analysis Report" as a love letter, and the conclusion column read - "When variable X (Su Nian) appears, all algorithms automatically fail. The priority instruction is updated to: protect her."
Their stories are written in columns, left in the file box in the interview room, and engraved in each other's formula for tomorrow. Love is not the calculated optimal solution, but the courage to choose to walk towards you despite knowing that all possibilities are uncertain...