Start with Signal

Donghuanan Mufeng Autonomous Region, Gao Shou, a newcomer to the Seoul Police Department, looked at the wireless walkie-talkie that lit up in his hand at home and was a little confused... He looked at the walkie-talkie's butt again... Indeed there is no battery! So he tried to get through... "How about Saiyou?" ……… Dusty cases... Missing people... With the beginning of his career as a police officer, he gradually broke into various circles... Clubs... Entertainment... Even the international... A little detective gradually stepped on this place under his feet as he moved forward!