Following a car accident, a parasitic extraterrestrial infiltrates a hospital, swiftly transferring from the crash victim to a candy striper. Among the hospital’s patients are a group of unusually short high school basketball players, through whose perspective we witness the unfolding events. The candy striper, now under alien influence, turns predatory, targeting men for sexual encounters and women to propagate the infection. The affected women develop an insatiable craving for sweets, consuming any sugary treats they can find. As the terror escalates and the CDC quarantines the hospital, the basketball players and a few allies desperately attempt to escape. However, it soon becomes clear that the alien menace has spread too extensively. Even if they manage to flee, it will only postpone the inevitable unless they can stop the alien invasion before it extends beyond the hospital and threatens the entire world.