In a Los Angeles suburb, a divorced father welcomes his son and stepmother for a visit. The son, David, befriends his neighbor Stevie and is hesitant to leave home alone when his parents attend a party. However, strange occurrences with the TV and appliances prompt him to investigate further, revealing a sinister force threatening the electrical grid.

Pulse
As a deadly electrical force descends upon their town, a family's frantic pleas for help go unheard, leaving them to fend for themselves against the impending doom.