In the reverse flow of time, two souls walking in opposite directions are destined to meet.
He saw her gray hair in the future, and she witnessed his youth blooming in the past. Only the moment of embracing each other became the only intersection in the time paradox.
When the meticulousness of the science man meets the hidden fragility of the science woman, from the campus laboratory to the roar of the machinery factory, they use formulas to calculate love and use drawings to outline the future.
Amidst the jet lag of long-distance relationships, the haze of depression, and the hidden arrows of workplace bullying, all the disapproval has become the nourishment for their reverse growth.
This is not a simple sweet love, but a life of two engineers tightened with screws and gears under the wave of China's manufacturing industry - when precise calculations encounter uncontrollable emotional variables, when time goes back and two-way travel occurs, they finally prove in the cracks of time: true encounters never have anything to do with direction.
Very real campus love, reminds me of the past.