Myungsoo and Krystal were in a realtionship for 3 years until on there anniversary Myungsoo brought in a girl and Krystal kindly let them in and the girl cam in with Myungsoo ask for his room and Krystal told her that it upstairs and when Krystal was about to come wipe Myungsoo but she had already noise from the room and when she open it she couldn't  believe that Myungsoo was doing that with her, but  for somehow she knows that he is going to do that.Krystal decides to leave for california for 4 years and leave Myungsoo and her Infinite without them knowing and when she came back to korea something happen that she wasnt excepting to hear from them and she acts like she doesn't  them when she came back to korea.......and the story goes on?..Should she leave him after she heard the news or stay?