Yuri has lived with her mother and younger brother after since the death of her father and has to take a job as a call girl to support the household. One day, her brother comes down with an illness, but she’s unable to stay home with him. When she gets home from work, she discovers him dead. Soon, she learns of a mysterious mobile app which allows its users to talk to the dead. The app has one rule: never reply if the dead person says, “I want to see you.”