Ordinary high school student Bong-seok hides a secret.

Frank recalls his past as he eliminates his targets. After Frank's visit, Mi-hyun suppresses her son.

Jae-man tries to save his wife with his strength and Ju-won is sent in to subdue him.

Mi-hyun and Ju-won watch the auditorium video and head to Jeongwon High, while Gye-do discovers Jun-hwa.

With Mi-hyun's question, Il-hwan reminisces about his past.

Parents and children fight to protect each other. Will this repeated war ever end?