Pun has a girlfriend, but his father wants him to date his friend's daughter. Pun's little sister Pang is obsessed with boys' love. Pun needs to convince Pang that he has a boyfriend so that she can help talk their father around the idea of dating his friend's daughter. So, he asked No to become his fake boyfriend in exchange for helping No raise funds for the Music Club. However, the fake relationship of these two seventeen-year-olds soon begins to feel real.