Five university friends gather at a house party to ring in the New Year. Unbeknownst to them, an epidemic has erupted outside, causing outbreaks around the world. With nowhere else to turn, they barricade themselves indoors with only their phones, laptops, and other tech devices. They use their devices to research the possible cause of this outbreak. Information and video footage over flow their computers as they descend further into the cause and the ensuing chaos. As the virus spreads, the mood in the house changes from fear to paranoia. Who is safe? Who can they trust? Reality becomes blurred as they slowly discover the source of the virus causing the sickness...and there is no going back这部电影表达的内容也许很简单，在全球疫情卷土重来、巨大生活压力、烦闷枯燥的工作，电影能让人心里一亮，获得片刻的宁静。