Three years ago, assassin Tide betrayed her organization by refusing to carry out a kill order. After escaping death, she adopted the alias Minghui and lived in seclusion in a small town with her blind sister Mingzhu, running a coffee shop. An accident exposes their whereabouts, and former accomplices track them down, catching Mingzhu in a manhunt. To save her sister, Chao Xi is forced to return to the killing game, and her hidden identity is revealed amidst the gunfire.

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