The calm criminal investigation captain sister and the genius undercover sister join forces. In the life-and-death battle between investigating their father's old cases and cracking down on crime, they are both tacit comrades-in-arms and each other's only support. The two fought side by side in the hail of bullets, using their ultimate intimate bond and absolute trust to tear apart the darkness and protect the light.
Purpose: Sisters joining hands are the only weakness and destination in a desperate situation