Migratory birds are called "transit birds" when they pass somewhere on their migration route.
Birds in transit are always passers-by, just like happiness is to Gu Nanshuang, it is always in a hurry and never stays.
Her father, who once regarded her as a treasure, almost jumped off the top floor with her in his arms when she was seven years old.
Her mother, who used to protect her with all her strength, almost became enemies with her after that day.
Her cherished friend is drifting away from her because of a secret that cannot be told.
And the people who tried to love her became the ones who hated her the most because of her forced lies.
As she walked towards the abyss step by step and gradually lost everything, fate revealed the cruel truth. She spent her youth but made every wrong step.