High school student 'Ji-eun' was the victim of the crime, but distorted online posts and malicious comments made her into the perpetrator in the public eye, driving her to take her own life. Her sister 'So-eun' finds detective 'Jun-kyung' to uncover the truth behind her sister's unfair death, and he begins hunting down a suspect in cyberspace. As clues are revealed one by one, the case grows from a simple rumor into a complex web of truth involving anonymous accounts.
Is Second Sister on Netflix? Unfortunately the movie Second Sister is not yet available on Netflix.
| Directing | Shin Jai-ho | Director |
| Writing | Chan Ho-kei | Novel |
| Writing | Shin Jai-ho | Writer |
| Production | Lee Hyun-joo | Executive Producer |
| Production | Kim Hoon Gwang | Executive Producer |
| Production | Ji Sang-chul | Producer |
| Camera | Kim Hak-su | Director of Photography |
| Editing | Kim Hee-won | Editor |
| Lighting | Chang Won-uk | Lighting Director |
| Art | Kim Sae-ro-mee | Production Design |
| Costume & Make-Up | Lim Ju-hyun | Costume Design |
| Sound | Hong Seong-jun | Sound Supervisor |
| Sound | Yoo Sang-hoon | Original Music Composer |
| Costume & Make-Up | Lim Ju-hyun | Makeup & Hair |
