Wonderland

Tang Wei

As Bai Li

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 Mu-sung

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

Lee Nam-gyeong

As Young Hae-ri

Moon Jung-woong

As Rehabilitation Therapist