Sector 7

In Sector 7, an underwater oil field located south of Jeju Island, Hae-jun is working as a marine equipment manager on an oil prospecting ship called Eclipse. Joining the crew later is Jeong-man, a former colleague of Hae-jun's father, assigned to Eclipse as captain. Though his job is to oversee the withdrawal of the ship, he suggests conducting some drilling one last time.

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  Ha Ji-won

  Cha Hae-joon
• 
  Oh Ji-ho

  Kim Dong-soo
• 
  Ahn Sung-ki

  Lee Jeong-man
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  Park Cheol-min

  Do Sang-goo
• 
  Song Sae-byuk

  Go Jong-yoon
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  Lee Han-wi

  Jang Moon-hyeong
• 
  Cha Ye-ryun

  Park Hyeon-jeong
• 
  Park Jeong-hak

  Hwang In-hyuk
• 
  Park Young-soo

  Jang Chi-soon
• 
  Oh Min-suk

  Yoon Hyun-woo