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

The fight takes a new turn with the appearance of a new North Korean superbeing, Jae Seok. 

Mi Hyun asks Deok Yoon where Doo Sik is, and he tells her what happened in the North. 

Jun Hwa attacks Hui Soo, and Bong Seok awakens his powers to save her.

With Mi Hyun's question, Il Hwan reminisces about his past. 

Mi Hyun and Ju Won watch the auditorium video and head to Jeong Won High, while Gyedo discovers Ju Hwa. 

Jae Man tries to save his wife with his strength and Ju Won is sent in to subdue him. 

After the Black Team disbands, Ju-won is offered a mission by Deputy Director Min to revive the team.

Doo-sik shows up at Mi-hyun's apartment with a plan to escape Deputy Director Min for good.

Ji Hee gradually opens up to Joo Won. 

Joo Won, who leads his gang with his monstrous abilities, is betrayed and becomes a fugitive. 

Doo Sik and Mi Hyun grow closer, and Doo Sik suggests that they deceive Min Yong Joon.

In 1994, Mi Hyun approaches black ops agent Kim Doo Sik at Min Yong Joon's orders.

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

Jeon Gyu Do's past is revealed. The NIS finds out information about Frank.

Hee Soo assures Bong Seok that his secret is safe by revealing her own secret.

Bong Seok's secret is exposed and Hee Soo walks him home. Frank searches for his third target. 

The closer Bong Seok grows to Hee Soo, the more risk of exposure he draws.

Mi Hyun hides Bong Seok's superpowers, but the mysterious incidents on social media make her anxious.

Ordinary high school student Bong Seok hides a secret.