When a military cargo plane crashes over London, its highly classified contents are scattered across the city, causing widespread chaos. In the midst of this turmoil, Charlie and his best friend Mark decide to visit a storage facility to sort out Charlie’s personal belongings after his recent breakup with Shelley. Unaware of the incident, they find themselves locked inside as the facility's security system activates due to an emergency protocol. Tensions already high from the breakup, the group—Charlie, Mark, Shelley, and her friends—begin to navigate the darkened storage facility, which soon becomes an unsettling labyrinth of locked rooms and corridors.

As they try to find a way out, they realize that something far more sinister than they had imagined has also found its way inside the storage complex. The group discovers that a horrifying creature from the downed cargo plane is hunting them within the confined space. Initially baffled by the nature of their unseen predator, their survival instincts kick in as they seek refuge and attempt to outwit the alien menace. The struggle for survival grows increasingly desperate as the relentless creature draws closer, forcing them to confront their deepest fears and work together, despite their personal conflicts, to find an escape.