The feature film"313套房" follows the journey of Special Agent Alexander Connor as he is assigned to look into a residence, where a woman named Sandra has made multiple emergency calls. The situation takes an unexpected turn for Agent Connor when he realizes he needs to save a cop who had visited the house a day before. Before long, Agent Connor uncovers a shocking truth: Sandra is a contributor to LUMEN CORPORATION and has dedicated her home to the organization. This residence has been transformed into a laboratory for cruel tests conducted on individuals, leaving Agent Connor horrified.