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.
Ha Ji-won
Cha Hae-joon
Oh Ji-ho
Kim Dong-soo
Ahn Sung-ki
Lee Jeong-man
Park Cheol-min
Do Sang-goo
Song Sae-byuk
Go Jong-yoon
Lee Han-wi
Jang Moon-hyeong
Cha Ye-ryun
Park Hyeon-jeong
Park Jeong-hak
Hwang In-hyuk
