“Once infected, you'll be lovesick”
A mysterious virus spreads out. Anyone infected feels the emotion of love, and the emotion amplifies until it kills the person in love. The pessimist Taek-seon, who likes nothing in life, is infected, and the researcher Gyun reaches her out to test her the medicine that he's developing. Soon Gyun finds out Taek-seon has special antibody, but Taek-seon slowly feels love to Gyun. Is this a real love or just a virus?
Where to watch
Not streaming anywhere
Not on any streaming service in United States, and not available to rent.
Your rating
Your review
Cast
24 people
Bae Doona
Ok Taek-seon
Known for
Sense8
Kingdom
Kim Yoon-seok
Lee Gyun
Known for
The Chaser
The Yellow Sea
Chang Ki-ha
Kim Yeon-woo
Known for
Past Lives
Son Suk-ku
Nam Su-pil
Known for
Sense8
D.P.
Moon Sung-keun
Professor Seong
Known for
Marry My Husband
Vagabond
Kim Hee-won
Director of Research Institute
Known for
My Love from the Star
Moving
Oh Hyun-kyung
Young-hee
Known for
When the Phone Rings
Twinkling Watermelon
Min Jin-woong
Jeong-hun
Known for
A Time Called You
Memories of the Alhambra
Yeom Hye-ran
Ms. Yeom
Known for
Guardian: The Lonely and Great God
The Glory
Yoo Soon-woong
Na Jeong-bae
Known for
Destined with You
Welcome to Samdal-ri
Lee Kyung-jin
Taek-seon's Mother
Known for
Sleep
Ayla: The Daughter of War
Choi Hyung-in
Gyun's Mother
Also in
Forever the Moment
To the Starry Island
Kang Yi-kwan Director · Lee Ji-min Author Lee Byung-woo Composer
First release May 7, 2025 · Produced in South Korea · Original title 바이러스
Production
The LAMP
Production
South Korea
Produced in
Languages
Original title
바이러스
Original language
Korean
Spoken on screen
Korean
Release dates
South Korea · May 7, 2025
Theatrical
No release date listed for United States.
Germany
October 26, 2025 · Premiere · Korean Film Festival Frankfurt
Hungary
October 16, 2025 · Premiere · Korean Film Festival
Poland
October 11, 2025 · Premiere · Warsaw Korean Film Festival
South Korea
May 21, 2025 · Digital
More from Kang Yi-kwan
Other films they directed, best known first.
Some details come from TheTVDB.