Storyline
Children who live in hiding with superpowers, along with their parents who live with painful secrets of the past, face enormous dangers together.
Top Billed Cast
Ryu Seung-ryong
Jang Ju-won
Han Hyo-joo
Lee Mi-hyun
Zo In-sung
Kim Doo-sik
Cha Tae-hyun
Jeon Gye-do
Ryoo Seung-bum
Frank
Kim Sung-kyun
Lee Jae-man
Kim Hie-won
Choi Il-hwan
Moon Sung-keun
Min Yong-jun
Lee Jung-ha
Kim Bong-seok
Go Youn-jung
Jang Hui-soo
Kim Do-hoon
Lee Gang-hoon
Kwak Sun-young
Hwang Ji-hee
Park Hee-soon
Kim Deok-yoon
Episodes
Episode 1 · Senior Year
Ordinary high school student Bong-seok hides a secret.
Episode 2 · Booyang: Family Support, Levitation
Mi-hyun hides Bong-seok's superpowers, but the mysterious incidents on social media make her anxious.
Episode 3 · 1+1
The closer Bong-seok grows to Hui-soo, the more risk of exposure he draws
Episode 4 · The Secret
Bong-seok's secret is exposed and Hui-soo walks him home. Frank searches for his third target.
Episode 5 · Recall
Hui-soo assures Bong-seok that his secret is safe by revealing her own secret.
Episode 6 · Bungaeman
Jeon Gye-do's past is revealed. The NIS finds out information about Frank.
Episode 7 · The Stranger
Frank recalls his past as he eliminates his targets. After Frank's visit, Mi-hyun suppresses her son.
Episode 8 · Black
In 1994, Mi-hyun is ordered by Deputy Director Min Yong-jun to get close to and learn about the thought process of black ops agent Kim Doo-sik.
Episode 9 · Humanists
Doo-sik and Mi-hyun grow closer, and Doo-sik suggests that they deceive Min Yong-jun.
Episode 10 · The Monster
Ju-won, who leads his gang with his monstrous abilities, is betrayed and becomes a fugitive.
Episode 11 · Romanticist
Ji-hee gradually opens up to Ju-won.
Episode 12 · Partners
Doo-sik shows up at Mi-hyun's apartment with a plan to escape Deputy Director Min for good.
Episode 13 · Jang Ju-won
After the Black Team disbands, Ju-won is offered a mission by Deputy Director Min to revive the team.
Episode 14 · The Idiot
Jae-man tries to save his wife with his strength and Ju-won is sent in to subdue him.
Episode 15 · N.T.D.P.
Mi-hyun and Ju-won watch the auditorium video and head to Jeongwon High, while Gye-do discovers Jun-hwa.
Episode 16 · The Man Between
With Mi-hyun's question, Il-hwan reminisces about his past.
Episode 17 · Awakening
Jun-hwa attacks Hui-soo, and Bong-seok awakens his powers to save her.
Episode 18 · South and North
Mi-hyun asks Deok-yoon where Doo-sik is, and he tells her what happened in the North.
Episode 19 · Final Battle
The fight takes a new turn with the appearance of a new North Korean superbeing, Jae-seok.
Episode 20 · Graduation Day
Parents and children fight to protect each other. Will this repeated war ever end?
