珊姆的孩子才出生就被人偷走，让她的心理遭受严重冲击，为了追踪真相，珊姆对网络上的「红房病毒感染者社群」进行探索，并结识了一个叫碧的女孩。挖出更多骇人事实的珊姆也…

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 worl…