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Murder goes viral as unsuspecting teenagers pick up their cell phones and listen to the sounds of their deaths. Before long, each suffers the same horrible fate. But it gets worse: The unknown caller then dials everyone in the victim's phone book. As the deadly calls multiply, it leads to a pandemic of murder. When her sister falls prey, journalist Takako (Asaka Seto) travels to Taiwan with an endangered girl, Kyoko (Mimura), to ID the wicked caller and stop the epidemic. Wikipedia