A contract killer gets entangled with a murder case and three terminally ill women who have each decided to end the life of one person before they die.
6 landscape wallpapers · click any to open Mac Mode
Explore wallpapers from films starring the The One and Only cast
14 featured
Ahn Eun-jin
Pyo In-sook
Kim Kyung-nam
Min Woo-cheon
Moon Seong-hyun
Min Woo-Cheon (teen)
Kang Ye-won
Kang Se-yeon
JOY
Sung Mi-do
Goh Doo-shim
Yook Sung-ja
Jang Hyun-sung
Pyo Gang-Sun
Seo Yeon-woo
Ha San-A
Ahn Chang-hwan
Shin Tae-il
Choi Young-woo
Park Seung Seon
Han Kyun-yu
Gu Ji-pyo
Do Sang-woo
Cho Shi-young
Lee Bong-ryeon
Hwang Ma-Jin
Jang In-sub
Oh Jin-kyu
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Last updated: June 9, 2026
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Quick answers about The One and Only wallpapers, cast, and downloads.
Moviely has 6 free The One and Only cinematic wallpapers available to browse, preview in Mac Mode, and download.
Yes. Every The One and Only backdrop on Moviely is free to preview and download for personal desktop or mobile wallpaper use.
The One and Only wallpapers include 4K and HD options. Moviely recommends the best size for your screen and offers original-quality downloads when available.
Yes. Open any The One and Only wallpaper in Mac Mode to preview it on a desktop or iPhone lock screen before downloading.
Open the The One and Only page, pick a backdrop, choose your preferred resolution (HD, Full HD, or Original), and click Download.
Yes. Select The One and Only backdrops are available in 4K / original quality for high-resolution displays.
The One and Only first aired in 2021. Moviely hosts cinematic wallpapers captured from the TV series's official backdrop imagery.
The One and Only is categorized as Drama.
Oh Hyun-jong directed The One and Only.
The One and Only stars Ahn Eun-jin, Kim Kyung-nam, Moon Seong-hyun, Kang Ye-won, JOY, and more.
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