Parents' Guide to Gnome Alone

In GNOME ALONE, Chloe (Becky G) and her mom move into a creaky old house, which turns out to be a supernatural portal to a world inhabited by ravenous, man-eating bowling balls called Trogs. For what seems like thousands of years, garden gnomes have been guardians of the earth -- who knew? -- growing vegetation and keeping the earth safe from Trogs. Chloe finds a glowing green gem in the house. Unaware that it's the gnomes' keystone, a kind of kryptonite that keeps the Trogs from over-running the earth, she takes it to wear as a necklace, then immediately lends it to Brittany (Olivia Holt), one of the popular mean girls she meets at school. This unleashes thousands of Trogs, which the gnomes back at the house struggle to contain. For some reason, the gnomes, otherwise silent little statues, reveal their true selves to Chloe and enlist her in the battle to send the Trogs back through their portal. She must recover the keystone and return it to the house, but when that plan is foiled, she ventures through the frightening portal, from which no one has ever returned, to rescue her friend Liam (Josh Peck), who was sucked through it when the Trogs attacked him. She discovers a larger green rock from which the keystone broke off and, using her cell phone battery, blows the place up. Instead of solving the problem, this creates a mega-Trog that looks a lot like the big monster in Ghostbusters, which is also destroyed using a cell phone battery.