If Xia Yu is a balloon in the air, then Xia Wuxia is holding his hand. She wants him to raise him whenever she wants him to rise, and fall when she wants him to fall... Xia Wuxia hates her mother who is obviously a woman but prefers boys over girls, and she hates her father who hides behind her mother and gets all the benefits but is invisible, and her younger brother who is determined to charge for her even though she is domesticated by her. She thought that as long as she keeps a calm but indifferent mentality, she can stay away from this home she hates until college. But unexpectedly, after she broke up in college, pretending to be drunk and teasing her brother casually, their relationship has undergone a qualitative change... If you can't get the love of your sister, you can't heal your sister, so use your younger brother's young high school student to comfort your sister. The bad guy sister who doesn't know how to love vs. The cold little brother who is determined to heal the bad guy sister's cold little brother...