She is cold and cold on the surface, but she is stubborn in her heart and never gives up; she is so gentle in front of others that she can bore them to death, but behind the scenes she is so violent that you will spend the rest of your life in bed; she seems to not care about anything, but in her heart she cares more than anyone else, and just uses her fiery temper as a protective color; in the eyes of her classmates, she is just obedient, but in fact it is the opposite. What can happen to four good sisters in college?