Abstract: A retractable barrier system for preventing unsupervised access to dangerous areas by children. The retractable barrier system includes an housing with an elongate perimeter wall, a bottom wall and a top wall which define an interior space; a barrier assembly positionable within the housing and extending through a slot of the housing; a biasing assembly for selectively retracting the barrier assembly into the housing; a receiving housing for selectively coupling to the barrier assembly; and an alarm assembly positioned within the receiving housing to provide an aural warning when the barrier assembly is disconnected from the receiving housing.