Tang Xuan is the underground girlfriend of Chu Hao, the lead singer of the men's rock band "Legacy" that has recently become popular in Asia. They have been together for seven years. Tang Xuan stayed by his side as an assistant. During the encore of their Asia tour concert, Chu Hao jumped off the stage and proposed to Tang Xuan. Tang Xuan was giddy with happiness, but the encore was not finished. Keyboardist Ah Chao threw the piano and left the stage angrily with red eyes and said to Chu Hao: "Why, it has to be today!" The encore that day became the biggest performance accident since the group was formed. The fans cried and cried, and there were speculations and discussions in the media. Some said it was hype, some said it was the discord among the group members, the love triangle incident, and Tang Xuan, who was pushed to the forefront. But Tang Xuan knew that there must be a story behind the quarrel between the two of them. The woman's intuition told him that it was related to the sunflower tattoo on Chu Hao's body. It happened when they were in high school or earlier. The two of them had never mentioned it in the past seven years, and they could not do it in front of Tang Xuan. The secret she was talking about was the vague veil that had been between her and Chu Hao in the past seven years. Tang Xuan decided to ask Chu Hao and Ah Chao to find out what happened. Ah Chao couldn't resist Tang Xuan's teasing, so in desperation, he painfully told Chu Hao and Chu Qi about the years of secret love for "Sunflower" between Chu Hao and Chu Qi.