After a sudden influx of humans developing a series of symptoms, one-by-one they rapidly turn into creatures that feast on humans. Both Sweet Home and #Alive are set in an apartment building whereby their residents try to survive against the apocalypse. In addition, both male main characters find out about the details of the world's situation through the internet and seeing the carnage with their own eyes. Both try to survive on their own inside their apartments at first but find themselves going outside their doors eventually to face the situation.