On a rainy night when she was seven years old, Su Wan, who came from a well-off family, waved a watercolor pen and used paint to scare away vicious dogs, and rescued Gu Chenzhou who was being attacked by stray dogs. The two children made a promise to visit an amusement park under a dilapidated roof, but it ended abruptly due to the death of the Su family, and they lost contact from then on.
Ten years have passed, and Su Wan has changed from a rich family's daughter to a street painter struggling to make a living, while Gu Chenzhou has grown into a young and promising richest man in the country. An unexpected encounter at an art exhibition allowed Gu Chenzhou to recognize the savior he had longed for. In order to make up for his childhood regrets, he approached Su Wan as a gallery investor, starting a romantic and powerful pursuit.
However, there is a crisis hidden behind the sweet reunion. Su Wan's father's commercial fraud case was brought up again, and she was caught in the whirlpool of public opinion. When Gu Chenzhou was tracing the truth, he discovered that the man behind the scenes was actually his most trusted business partner. Facing the malice and conspiracy of the outside world, the former little hero Su Wan and the current guardian Gu Chenzhou join hands to write a romantic legend of two-way redemption in the storm of urban business war.
