Wen Ran, who had always followed his own way and wanted to live a life like water without fighting or grabbing, unexpectedly jumped into a koi.
She stole the rules of life that she never had from this "koi carp". She thought she could live a peaceful life according to the rules she stole, but she didn't expect that the "koi carp" that suddenly disappeared and she thought she would never see her again disturbed her pool of clear water again...