Teacake and Naomi, two young employees of a self-storage company built on
the site of an old US military base, have their wildest night shift ever when
a parasitic fungus escapes from the lowest sublevel of the base, where it
was sealed by the government decades before. As the temperature
rises underground, this highly contagious microorganism multiplies and
unleashes its terrors on the facility's inhabitants - human and otherwise.
