Chloe and her estranged mother, Catherine, move to Tenderville, in a massive house surrounded by mysterious gnomes. One night during dinner, Chloe discovers a secret room that holding a mystical green gem, which she takes and turns into a necklace. Unbeknownst to her, she opens a portal from another realm in her basement, unleashing a pack of rabid and hungry creatures named "Troggs". At her new school, Chloe befriends popular girl Brittany and her friends, Tiffany and Chelsea, collectively known as the BTCs. Chloe catches Brittany's attention with the necklace and she gives it to Brittany in hopes of entering her clique. At home, Chloe encounters a Trogg and attempts to kill it, before it mysteriously blows up.