Head of a bank center in Busan, Sung Gyu drives his child Hye In to her college entryway examination. A telephone call comes in on Hye In's phone with a restriction on the number screen (additionally recognized by the slang "black phone call"). She takes the call, as well as a voice tells her, "There's a bomb under your seat now." And as quickly as you quit as well as get out of the car, it's mosting likely to blow up, she is told. In the middle of midtown Busan, the scared run of Sung Gyu's household starts. "Restricted Telephone call" is a metropolitan chase thriller about a family members in an unpredictable circumstance because of a mystical telephone call.