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?
as Ok Taek-seon
as Lee Gyun
as Kim Yeon-woo
as Nam Su-pil
as Professor Seong
as Director of Research Institute
as Young-hee
as Jeong-hun
as Ms. Yeom
as Na Jeong-bae
as Taek-seon's Mother
as Gyun's Mother
as Ji-seon
as Yi-ju
as Manager Kim
as Doctor 1
as Doctor 2
as Cop 1
as Cop 2
as Young Taek-seon
