Su Nian is an outstanding graduate of Beicheng University, successfully completing her studies through student loans and part-time jobs. On the day of her graduation ceremony, her older sister Su Wan, from whom she has been separated for seventeen years, comes to reunite with her. At the scene, faced with a difficult choice, Su Nian prioritizes protecting her family member. Su Wan does not reveal her true identity, encouraging Su Nian to train and grow from a grassroots position. Supporting each other, the two sisters work hand in hand to break through numerous obstacles, properly clear up past entanglements, walk side by side all the way, and jointly reap the wonderful life that belongs to them.