Saving the world isn’t easy. It’s even harder when you’re only nine. Kelly Donovan used to be a nobody. Well, a smart nobody. Skipping ahead a year in school made her the smallest kid in fifth grade and a target for bullies in search of an easy mark. She tried to follow her father’s advice and ignore them, but it didn’t do any good. Escaping into her favorite comic books at least helped her through the day. Who needs friends anyway? Sometimes, dreams find a way to come true, even if nobody asked them to. Aliens bombard the Earth with gigantic glowing red crystals to restore its failing magnetic field. Soon after the seemingly benevolent invasion, Kelly discovers her wildest, happiest fantasy come to life: she has superpowers, along with roughly two percent of the population. Her strong good nature leads her to adopt the heroic persona of Übergirl. However, she has one major problem… Her dad’s turning into a mad scientist. It’s difficult to be a hero, especially when your father’s a bad guy.

Kelly Donovan wants to save the Earth from aliens, but her plan has a serious snag—she needs to do it before bedtime. It’s been a few weeks since the Nolmek scattered giant crystals around the world that unintentionally gave some people super powers. They also nearly eliminated war and shared technology to solve famine, drought, and pollution, so pretty much everyone loves them. Alas, the aliens didn’t visit Earth purely out of kindness. They needed a primitive species to enslave. Kelly discovers they’re speeding up their plans, already abducting people from the super-prison right out from under the cops’ noses, the same prison her mad-scientist father is stuck in. She’s desperate to protect him, but unfortunately, no one is willing to believe the Nolmek could be bad guys. Worse, they know she’s on to them. If she can’t find proof of the aliens’ plan, stop the invasion, and be in bed before nine, she faces worse than the enslavement of humanity—she’ll be grounded.

Nine-year-old Kelly Donovan helped save the world from aliens, but now she has an even bigger problem—someone’s trying to ruin Halloween. Life is difficult for the world’s tiniest superhero. Her genius plan to save her parents from supervillainy in one easy step proved impossible… at least not without destroying the Earth. Superpowers, good or bad, aren’t going away any time soon. Mom’s as likely to hug her as trick her into a ridiculous trap, but at least her dad’s mellowed out a bit. Lately, he seems focused more on being weird than evil. Small favors. Kelly’s looking forward to the happy normal of trick-or-treating… until candy starts disappearing. Convinced a mysterious supervillain is responsible, she and her best—only—friend Paige rush to stop all the sweets in the world from evaporating. Alas, with only a week left and zero clues, humanity will likely suffer an even worse fate than enslavement by an alien race: the end of all Halloweens.