Witnessing death before his eyes, In-seong gets shocked. He goes back to his hometown to protect himself and his family, which are more precious to him than one billion won Sun Joo had promised. After realizing he wasn't driven only by money, he comes back and starts investigating who attacked Mr. Kwak.

With the help of Sun Joo inside the smartphone, In Sung discovers Sun Joo's body in their enemies' base. Everything starts to fall into place and In Sung finds out who is behind all this. Then he draws up a plan to play one enemy off against another.