The female protagonist's daughter is seriously ill and needs a kidney source, but her husband's family despises her for giving birth to a daughter and is unwilling to donate a kidney, while also domestic-abusing and insulting her. When the female protagonist falls to rock bottom and her life is pitch-black and without light, she meets the male protagonist. The male protagonist formed a bond with the female protagonist back in their childhood, and seeing everything the female protagonist experiences, he actively helps and accompanies her by her side, bringing warmth to the female protagonist and helping her deal with her husband together. In the end, they pierce through the clouds and see the light, walking together toward a wonderful future.