Simon is a computer programmer who wakes one morning to find a plain brown package in his apartment. He unwraps it, but nothing is inside. Despite attempts to secure his apartment, the mysterious packages keep appearing. While security cameras watch his every move, Simon becomes increasingly paranoid and suspicious of all the tenants in his building. When one of them turns up dead, Simon is pushed even closer to the edge. Plagued by hallucinations, he frantically searches for answers about the mysterious forces taking over his life.