"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."
Tang Wei
as Bai Li
Bae Suzy
as Koo Jeong-in
Park Bo-gum
as Park Tae-ju
Jung Yu-mi
as Seo Hae-ri
Choi Woo-shik
as Kim Hyun-soo
Gong Yoo
as Sung-jun
Tang Joon-sang
as Choi Jin-gu
Seong Byeong-suk
as Song Jeong-ran
Choi Moo-seong
as Lee Yong-sik
Lee Eol
as Hae-ri's Father
Kang Ae-sim
as Hae-ri's Mother
Kim Sung-ryung
as Gil-soon
Park Hee-von
as Stella
Anupam Tripathi
as Hanan
Darcy Paquet
as Danny
Jang Yoon-jung
as Yong-sik's Wife
Song Duk-ho
as Yong-sik's Son
Jang Sung-yoon
as Yong-sik's Daughter
Nina Paw Hei-Ching
as Hwa-ran
Park Yeon-woo
as Male Employee at the Airport
Min Ji-a
as Tae-ju's Doctor
Kang Jin-ah
as Investigative Detective
Kim Geu-lim
as Hae-ri's Colleague
Park Mi-hyeon
as Hyun-mi
Jo Hee-bong
as Tae-ju's Senior on the Subway
Jeon Su-ji
as Jeong-in's Colleague on the Subway
Jeon Woon-jong
as Senior Purser
Jeong Seong-in
as Jeong-in's Colleague
Son Kyoung-won
as Taxi Driver
Park Hong-yeol
Director of Photography
Oh Jung-wan
Executive Producer
Park Kwan-su
Kim Tae-yong
Writer
Min Ye-ji
Kim Sung-jin
Kim Seung-gyu
Lighting Director
Kim Hyeong-yong
Ahn Bock-nam
Production Sound Mixer
Shin Eun-hee
Art Direction
Seo Sung-kyung
Production Design
Kim Jung-woo
Set Decoration
You Cheong
Props
Park Jun-yong
Ham Hyun-joo
Costume Design
Song Jong-hee
Makeup & Hair
Park Young-sik
Martial Arts Choreographer
Lim Wang-sub
Park Dae-hun
Special Effects Supervisor
Kim Hyung-joo
Editor
Bang Jun-seok
Original Music Composer
Han Myung-hwan
Sound Supervisor
Yun Se-yeong
Assistant Director
Noh Kyung-hee
Adaptation
Kim Byung-seo
Kang Yi-kwan
Choi Yong-jae
Key Grip
Song Kyung-min
Jang Joo-yeon
Line Producer
Lee Bok-seon
Director
Lee Seung-bok
Producer
Cho Il-hyung
Co-Executive Producer
Lee Jae-woo