After getting kicked out of the Hong Kong national fencing team, Jackson Wang is sent to one of the best sports driven high school located in Seoul. For some reason, however, throughout all his harship, he finds comfort near the swimming pool where he often enounters Mark Tuan, the highly regarded swimming captain who hardly takes interest in other people's affairs, but for some reason finds himself curious about Jackson. 

Jaebum finds his photo album of him and his first love, Jinyoung, and reminsces of the times they spent together. 

After years of friendship with Jaebum, Jinyoung gets jealous as he is pushed away for Choi Youngjae. He will do anything in his power to get Jaebum back by his side, even if it means hurting Youngjae.