Choi Hyung-in

Two men have returned to their hometown (the titular island) from Seoul to bury the father of one of them, but the islanders vehemently refuse their request, triggering memories of their childhood before and during the Korean War.

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?