"Do you wat to do it...?"The fatal eductio of...the "Challege Game"Floit Ae-a (Vicky) ad foeic ivetigato Mi-ho (Choi Ryeog) fom the Public Poecuto' Office both have a family that eveyoe wat. Howeve, Mi-ho ca't hadle bed time o Ae-a tat a 'challege game' i which he educe ad ha ex with tage me. Oe day, Ae-a ad Mi-ho meet Alex (Choi Hyeo-ho) at a tago cafe. Alex i iteeted i Ae-a ad appoache he while Ae-a take iteet i Alex who i moe hadome tha he hubad. Mi-ho late witee them i actio ad get agy whe he fid out the ma Ae-a educed i Alex. Mi-ho feel evou becaue he fid out Alex i't jut a game pate ad appoached him fo a eao. Mi-ho tie to get id of Alex but Alex choke Ae-a ad Mi-ho eve moe ad feel cathai. The game they tated i tuig ito a catatophe...