Anna woke up in bed, her head aching from the previous night's revelry. She turned on her phone and found a new mysterious interactive app called "IRIS"; it secretly took photos of her best friend's cheating evidence, and spread indecent photos, private videos and messages on Facebook, monitoring her life. Her friends were involved and fell into panic. Anna tried every means to remove IRIS, but it attracted a fatal murderous intention. Unwilling to be at a disadvantage, she decided to face it head-on...