In a world where an AI programme allows people to communicate with their deceased loved ones, a flight attendant and a mother question the meaning of reality and humanity.
湯唯
as Bai Li
수지
as Koo Jeong-in
박보검
as Park Tae-ju
정유미
as Seo Hae-ri
최우식
as Kim Hyun-soo
공유
as Sung-jun
탕준상
as Choi Jin-gu
성병숙
as Song Jeong-ran
최무성
as Lee Yong-sik
이얼
as Hae-ri's Father
강애심
as Hae-ri's Mother
김성령
as Gil-soon
