I would ask someone to protect a person important to me. If I could communicate with the past, that is… If I do nothing, I’d regret that too. Isn’t it better to try something even if it becomes a mess? – Cha Soo Hyun Synopsis : A mysterious walkie talkie allows a detective in the year 1989 to communicate with a cold case profiler from 2015; with the power of fore and hindsight the two not only solve crimes but prevent them from ever taking place. A criminal profiler Park Hae Young (Lee Je-hoon), solves a kidnapping case that ended…