Shin Tae-hwan, the founder of the Taeseong Group, has no problem hurting others to get his own way; when he impregnates a nurse who refuses to have an abortion, she believes the best plot for revenge is to switch his child with another.

Shin Tae-hwan's plan to kill Lee Ki-chul succeeds, but what he doesn't know is that a plot against him is also well underway.

Dong-chul is on the run, but is quickly apprehended and sent to a juvenile prison; while in prison, he meets Wang-gun, the prisoners' unofficial leader; the two forge not only a friendship, but a potential plan for escape.

Dong-chul and Wang-gun's plan to escape continues, but a visit by Choon-hee may reveal a much more dire problem than anything Dong-chul could have imagined.

Before Dong-chul can celebrate his escape, he must raise the money to pay for Choon-hee's operation to save her life; getting enough money could mean becoming involved in the real world of crime.

Dong-chul's problems only worsen when Cheng is kidnapped; Dong-wook celebrates his academic award; Myung-hoon's jealousy of Dong-wook causes events to spin out of control for both families.