There aren't many who experience this kind of scenario, gut-wrenching as it could be, and he was only fourteen when his two-year-old sister was kidnapped. An eight-year-long of searching would come to an end, finding her-alive-in the hands of her own abductors, who had been raising her in place of their dead daughter. Burdened with past guilt, Kim Seokjin, a rising idol from the K-pop group BTS, takes in his long-lost sister, with a month to reconnect before the tour, the cameras, and the fame pull him away again. But something seems wrong. Other than the bizarre ability she seems to have, she's growing more distant. More quiet. Who exactly did she bring along with her?