The Urban Equation of a Beating Heart is a romantic love story set in the bustling city of Shanghai. Lu Xingchen, a cheerful, sunny barista, believes fate has a plan and looks forward to finding the love he is destined for. Lin Yinuo, an independent and confident fashion editor, believes you have to fight for love yourself and scoffs at the idea of a destined romance.
An unexpected encounter and a cup of accidentally spilled coffee bring together two people who had never crossed paths before. The coffee stain forms a strange pattern on Lin Yinuo's white dress. To Lu Xingchen, who believes in fate, it is further proof that the girl before him is the one he is destined to be with.
However, Lin Yinuo is unimpressed by Lu Xingchen's enthusiasm and talk of destiny. The two have very different personalities, and as they spend time together, they go from disliking each other to gradually feeling drawn to one another. Through misunderstandings and challenges, they begin to sense each other's sincerity.
What sparks will fly when romantic belief in a destined love meets rational disbelief? When all of life's unexpected turns become catalysts for love, how will they solve the Urban Equation of a Beating Heart that belongs to them?