Eleven years after being abducted, Su Nian finally returns to her biological family. Greeting her is her older brother's coldness, her mother's tears, her father's restlessness, and her older female cousin's gentle "reminder"—back then, it was her older brother who left her behind at the park. But deep in the study late at night, half a drawer of plane tickets flying to welfare houses nationwide tells her that things are not so simple. As the truth is peeled back layer by layer, Su Nian discovers that the coldness is a disguise, the driving away is protection, and behind those blood-stained ballet shoes hides a secret of an older brother atoning for his sins with his entire life.