A woman's life is turned upside-down when a dangerous man gets a hold of her lost cell phone and uses it to track her every move.

A story about three friends who just turned twenty; an age where you can do whatever you want, love whoever you want with opportunities abroad.

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?

A pitcher who can't throw strikes and his unlikely manager form a heartfelt bond.