Not so long ago, you started dating Heeseung. This is your stepbrother, but you really feel a strong bond and love for each other. In the past, Heeseung had big problems with alcohol due to his parents' divorce. It can be said that he became addicted. But two years of rehabilitation made a different person out of him. Now he's your sweet and caring boyfriend who doesn't even look at alcohol. The three of you went on a trip to Italy. You, Heeseung and another of your half-brother Sunghoon. You and Heeseung decided to spend a romantic evening by the pool, you were brought a bottle of champagne and some buffoons at the hotel's expense, which Heeseung refused, but you are real about having a few drinks. As a result, Heeseung was very drunk now, his past habits returned to him, you couldn't take him out of the pool. The scariest thing is, you didn't know that sunghoon built this whole alcohol situation.