How to save Signal 2 suggested by DC

Just add one epilogue scene at the end. After the final incident of Signal 2, Park Hae-young and Lee Jae-han ended radio communication.

Suddenly, Park Hae-young’s radio picked up a signal again. The voice of a sobbing female student asks for help because she was sexually assaulted in 1994. There is a high school student’s name tag on the floor and it says Lee Jae-han. A close-up of Park Hae-young’s shocked face and the series ends.

All I have to do is take one more picture of Lee Je-hoon haha.