"I'll never tell" Choi Yeonjun is a eight teen year old senior who is grieving the death of his father. He finds the world around him to be gray, life is dull and has a lost all of its meaning. Just as he's given up on not only himself but the world around him, someone steps into his life. This person brings the color back in the world, they bring life it's meaning again. They give him hope. However, they must stay secret about their forbidden romance. One slip and it's all over, one mistake and everything they built will come crashing down around them. Yeonjun is forced into secrecy about his lover Choi Soobin.