Jeon Jungkook, the stage four of fire element holder met someone who is look alike his long-lost girlfriend, Hye jin. He fell in love with the girl which named Sang Hee that changed him from a warm-hearted guy to a flower boy only for her with a reason," Sang Hee reminds me about Hye jin a lot."  

"I'll keep my feelings for him since he has someone else"  - Yoo Han Jin (You)-