When Sky Patel-Baum is sent to live with her mysterious uncle, she didn’t imagine she’d end up here: Area 51. A top-secret military base with a bajillion rules and so classified not even the president knows its secrets. Also, it turns out the place is full of aliens. Lots and lots of aliens. But they prefer to be called Break Throughs, thank you very much. As Sky sets out to explore her extraordinary new home with her pizza-obsessed pet hedgehog Spike, she meets her otherworldly next-door neighbor Elvis and his fluffy pup, Pickles. But something mysterious is afoot in Area 51. Some of the Break Throughs have gone missing… at the exact same time Sky arrived. Can Sky and her new friends crack the case?