Twin sisters Chen and Hei were close, but separated after their parents’ divorce. Years later, Chen, now a STAR officer, finds Hei dead and assumes her identity to uncover the truth—while tracking Kit, who's investigating a missing engineer in Singapore.

A brutal murder case causes twin sisters, who have not seen each other for ages, to be reunited in some foreign place. Their life trajectories, which are like parallel lines, again get intertwined.

A brutal murder case causes twin sisters, who have not seen each other for ages, to be reunited in some foreign place. Their life trajectories, which are like parallel lines, again get intertwined.

A brutal murder case causes twin sisters, who have not seen each other for ages, to be reunited in some foreign place. Their life trajectories, which are like parallel lines, again get intertwined.

A brutal murder case causes twin sisters, who have not seen each other for ages, to be reunited in some foreign place. Their life trajectories, which are like parallel lines, again get intertwined.

A brutal murder case causes twin sisters, who have not seen each other for ages, to be reunited in some foreign place. Their life trajectories, which are like parallel lines, again get intertwined.