Five Nights at Freddy's: Security Breach takes place in a massive entertainment complex known as Freddy Fazbear's Mega Pizzaplex, which has animatronic mascots, Glamrock Freddy, Glamrock Chica, Montgomery "Monty" Gator, and Roxanne "Roxy" Wolf. As the animatronics perform for an audience at the complex, Freddy suddenly suffers a malfunction and breaks down on stage, ending the performance. Afterwards, he is taken to Rockstar Row and discovers that a young boy named Gregory is hiding inside his stomach compartment. After the discovery, Vanessa, a female security guard and the only human on staff for the night, orders all animatronics and staff bots. The animatronic mascots have become aggressive for unknown reasons—to search for Gregory.