Ordinary high school student Bong-seok hides a secret.

The closer Bong-seok grows to Hui-soo, the more risk of exposure he draws

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

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.

Jun-hwa attacks Hui-soo, and Bong-seok awakens his powers to save her.

Mi-hyun asks Deok-yoon where Doo-sik is, and he tells her what happened in the North.