Synopsis：Twin brothers Lan Junyu and Lan Shaojie were forced to live apart after their parents divorced when they were young, leading vastly different lives. Years later, when the two brothers meet again, Lan Shaojie witnesses his younger brother Junyu living in poverty and being ostracized by classmates, so he decides to swap identities with him. As a result, Lan Junyu enters the best school in Qingjiang City under his brother's name. At school, Lan Junyu meets Luo Xi, a righteous person who often stands up for others but repeatedly gets framed and wronged. Upon learning that Luo Xi once helped Li Xin, the stepson of Lan Shaojie's stepfather, Lan Junyu decides to step up and assist Luo Xi. Although this causes Lan Junyu to lose his position as student council president, he gains the heartfelt support of his classmates. Just as Lan Junyu plans to end the identity swap, he is told that the exchange is far from over. His mother, Jiang Xiu, reveals the plan behind the swap. Despite his reluctance, after being persuaded by both his mother and brother, Lan Junyu accepts the plan and from then on becomes his brother's shadow.