BESTIES tells the story of two high school girls -- Sandy (Olivia Croicchia), a high school freshman and self-described loser and Ashley, a sexy senior and Sandy's former babysitter. Sandy, hoping to forge a friendship with the most popular girl in school, arranges to be left at home under Ashley's supervision while her father (Corin Nemec) goes out of town. Little did Sandy know that an unexpected visitor from Ashley's past will leave the awkward freshman and her idol tangled up in a manipulative and deadly friendship.