This is a drama about love, family, friendship and love. It tells the story of a group of young people who come together with their own dilemmas in life, and encourage and support each other. Hong Qingqing lives a difficult life with her six-year-old sister's orphan, Hong Dou, and takes care of her father, Hong Shan, who suffers from Alzheimer's. These seemingly "troublesome" family members also bring Hong Qingqing a sense of home, until Hong Shan's death, a truth that has been hidden for years emerges, and the relationship between Hong Qingqing and Meng Le is also brought to light. The relationship between Hong Qingqing and Meng Le has become uncertain because of a memory of St. Petersburg... The secret relationship between Zhang Liangliang and the poor boy schoolboy Lu Shan is exposed, the parents' opposition plus Lu Shan's unannounced departure, is it really just a simple misfit between the two? Are the two of them are really just incompatible with each other?...