Gun and Off they love each other, their love is like a fairy tale everything is perfect. But one day Gun suddenly left without saying goodbye to Off. What if they will meet again but no longer as lovers or stranger but as a step brother. Off promised himself that he would never love Gun again, he didn't want to be hurt again and most of all he didn't want to be left alone again. What if Gun finds out the truth? What if Gun still loves Off? What if Gun wants Off to love him again.

Gun grew up with Off but the young man has a strange personality and he is sick, Gun can do everything for Off, he is ready to enter the world where Off's missing soul is trapped. Off already has everything, wealth, loving family, friends and boyfriend, but it seems like something is missing in him that he doesn't know what it is. He is sick and often dreams of strange things. One night, he and Gun dare to enter the world that full of lies. What they did was very dangerous because they could be imprisoned there and never return to the real world. Gun discovers a lot about himself and Off finds out what he is missing. What will be their fate? Will they succeed in what they do or not? What is the reason why there are two different worlds?