Oasis

Director

• 
  Yoon Sung Shik
• 
  Han Hee

Executive Producer

• 
  Park Gi Ho
• 
  Kim Sang Hwi

Screenwriter

• 
  Jung Hyung Soo

Main Role

• 
  Jang Dong Yoon

  Lee Du Hak

  Main Role
• 
  Seor In A

  O Jeong Sin / Sophia

  Main Role
• 
  Choo Young Woo

  Choi Cheol Ung

  Main Role

Support Role

• 
  Do Sang Woo

  Kim Hyeong Ju

  Support Role
• 
  Hyun Seung Hee

  Ham Yang Ja

  Support Role
• 
  Jin Yi Han

  O Man Ok

  Support Role
• 
  Im Seung Joon

  Ul Peu [Gangster]

  Support Role
• 
  Jeon Noh Min

  Hwang Chung Seong

  Support Role
• 
  Kang Kyung Hun

  Kang Yeo Jin [Cheol Ung's mother]

  Support Role
• 
  Song Tae Yoon

  Kim Gil Su

  Support Role
• 
  Kim Myung Soo

  Lee Jung Ho [Du Hak's father]

  Support Role
• 
  Han Jae Young

  Yeom Gwang Tak

  Support Role
• 
  Kang Ji Eun

  Cha Geum Ok

  Support Role
• 
  So Hee Jung

  Jeom Am Daek [Du Hak's mother]

  Support Role
• 
  Ahn Jung Hoon

  Ko Won Geun

  Support Role
• 
  Park Won Sang

  Choi Yeong Sik [Cheol Ung's father]

  Support Role
• 
  Lee Han Wi

  Ko Pung Ho

  Support Role
• 
  Lee Kyo Yeob

  Son Su Gong

  Support Role
• 
  Jang Young Hyun

  Yoo Yeong Pil

  Support Role
• 
  Shin Youn Ha

  Lee Jeong Ok [Du Hak's younger sister]

  Support Role
• 
  Jang Da Kyung

  Ma Cheong Ja

  Support Role
• 
  Ahn Dong Yeob

  Jo Seon U

  Support Role
• 
  Jung Ji Soon

  Jang Jang Deuk

  Support Role
• 
  Bae Seul Gi

  Song Yeon Ju

  Support Role
• 
  Ha Hye Seung

  Gyeong Ja [Housekeeper]

  Support Role
• 
  Park Yong U

  Lee Yong Deuk

  Support Role

Guest Role

• 
  In Sung Ho

  Kim Yeong Seong (Ep. 1)

  Guest Role
• 
  Park Noh Shik

  [Projectionist] (Ep. 1)

  Guest Role
• 
  Lee Jin Mok

  [High school teacher] (Ep. 1)

  Guest Role
• 
  Kim Se Dong

  [Division commander] (Ep. 1)

  Guest Role
• 
  Ahn Soo Ho

  [Hired protestor] (Ep. 2)

  Guest Role
• 
  Go Byung Taek

  [Document seller] (Ep. 2,13)

  Guest Role
• 
  Kim Joon Hyung

  [Gangster] (Ep. 3)

  Guest Role
• 
  Lee Moo Nyoung

  [Factory manager] (Ep. 3)

  Guest Role
• 
  Kim Hyun Kyu

  [Student activist] (Ep. 3)

  Guest Role
• 
  Yun Ho Rim

  [University student] (Ep. 3)

  Guest Role
• 
  Kim Jeong Nam

  [Building owner] (Ep. 3)

  Guest Role
• 
  Kim Gyeong Min

  Na Il Sun [CEO] (Ep. 4)

  Guest Role
• 
  Won Chun Gyu

  [Businessman] (Ep. 4)

  Guest Role
• 
  Han Sang Chul

  [Tickets buyer] (Ep. 4)

  Guest Role
• 
  Jeon Chi Hwa

  [Actor] (Ep. 4)

  Guest Role
• 
  Ko Dong Ok

  Director Park (Ep. 5)

  Guest Role
• 
  Lee Byeong Cheol

  [Doctor] (Ep. 5)

  Guest Role
• 
  Seo Beom Shik

  Byun Hak Su [CEO] (Ep. 5-6)

  Guest Role
• 
  Kim Jin Man

  [Chung Seong's subordinate] (Ep. 5-6)

  Guest Role
• 
  Jeon Jae Hong

  [Prosecutor] (Ep. 5, 9)

  Guest Role
• 
  Seo Kwang Jae

  Lee Jun Sik [Police chief] (Ep. 6)

  Guest Role
• 
  Lee Hyun

  [Lee Du Hak's landlord] (Ep. 6)

  Guest Role
• 
  Kim Jung Soo

  Na Yak Gwon [Doctor] (Ep. 6-7)

  Guest Role
• 
  Shin Yeon Suk

  [Cheol Ung's ex-babysitter] (Ep. 6-7)

  Guest Role
• 
  Jung Jae Won

  CEO Yun (Ep. 7)

  Guest Role
• 
  Seol Woo In

  Lee Yun Ae (Ep. 7)

  Guest Role
• 
  Kim Young Hee

  [Yeo Jin's friend] (Ep. 7, 9)

  Guest Role
• 
  Moon Ki Young

  [Ethics committee manager] (Ep. 8)

  Guest Role
• 
  Hwang Jae Hoon

  [Detective] (Ep. 8)

  Guest Role
• 
  Ham Gun Soo

  Koo Pan Sik [Chairman] (Ep. 9)

  Guest Role
• 
  Kim Jin Seo

  [Investigator] (Ep. 9)

  Guest Role
• 
  Kim Vi Ju

  Chae Ha Yeon (Ep. 12)

  Guest Role
• 
  Kim Byung Gi

  Chae Dong Pal (Ep. 12)

  Guest Role
• 
  Jung Bo Min

  Geum Yeon Hui (Ep. 12)

  Guest Role
• 
  Moon Jung Dae

  Geum Man Cheol [Chairman] (Ep. 12)

  Guest Role
• 
  Park Sang Hyuk

  [Lee Du Hak's friend] (Ep. 12)

  Guest Role
• 
  Lee Myung Ho

  Kim Wan Gi (Ep. 13)

  Guest Role
• 
  Maeng Bong Hak

  Choi Jong Jin [Chief] (Ep. 13, 16)

  Guest Role
• 
  Shim Jae Hyun

  Kim Seong Yeob (Ep. 14)

  Guest Role
• 
  Yoon Tae In

  Sin Sik (Ep. 14, 16)

  Guest Role
• 
  Jang Young Joon

  Ki Yeong Tak

  Guest Role
• 
  Kim Jung Kyoon

  Jung Guk Yeong

  Guest Role
• 
  Jeon Gook Hwan

  Choi Byeong Cheol

  Guest Role
• 
  Ahn Da Bi

  Gil Ya

  Guest Role
• 
  Kim Hyo Jin

  O Tae Ja [Jeong Sin's aunt]

  Guest Role
• 
  Park Ji Il

  [Jeong Sin's father]

  Guest Role
• 
  Lee Kan Hee

  [Jeong Sin's mother]

  Guest Role
• 
  Jung E Chan

  [Student]

  Guest Role
• 
  Seo Ye Bin

  [Female employee]

  Guest Role
• 
  Lee Hae Won

  [Detective] (Ep. 2)

  Guest Role
• 
  Kim Jin Man

  [Chung Seong's subordinate]

  Guest Role
• 
  Lee Jae Gwang

  [Guitar-playing college student]

  Guest Role