Chenfan, a young man who lost his father when he was young, lives with his mother. Perhaps the best portrayal of them is his stern appearance and inner affection. Chenfan lived in such a depressing environment until he was 18 years old. Until he met Xiang Ji'an, the young man who always had a smile on his face. He shines into the ordinary life like sunshine, and they redeem each other as they grow up. From a quiet secret love to a blatant love, youth blows away the immaturity of youth, and life should be so beautiful. But in an accident, Xiang Jian suffered from cancer, but he never told Chenfan. When Chenfan found out, Xiang Jian was already in the advanced stage of cancer. He didn't know if he would die. But at the last moment of his life, he faced it with a smile... "The sun saved his life, but it will always set..."
Concept: Sweet first, then cruel