Set in modern day Helsinki, Finland, Virality portrays the lives of several main characters confronted with viral themes. The film links emerging viral aspects in our modern day societies, such as the spreading of news on the internet, with the viral nature of life itself, as in the storyline of a cancer patient being treated with virotherapy. Being primarily a crime film, the main storyline centers around a bitcoin heist that connects the lives of the main characters. Character storylines involve a young rapper searching for a breakthrough, a policeman who falls for an aspiring musician with a promising international career, a hacker choosing his own path and a cancer patient and a banker who reconcile ten years after the end of their marriage.

Lasse is an old racist who has lives in an apartment block filled with a selection of refugees and immigrants. Kamal is a 16-year old boy who's fed up in his life in Finland, and dreams of moving to Nairobi to live with his father. Only problem is that he doesn't have the money to buy the ticket.