Meet Morgan, the girl who wields the power of thunder. It's . . . not as cool as it sounds. You're thinking of lightning.

No matter how useless her power is, she guards her secret closely. If the government ever finds out Morgan is an Ultra like her twin brother—Chicago’s famous Megavolt—she’ll be torn from her foster home and separated from her only family. Shipped off to become some other city's designated Ultra.

She’s managed to keep her secret safe until now, but Morgan’s world is flipped upside down when an intruder breaks into their home. After narrowly escaping a telekinetic attack, she’s faced with the news she never thought she’d hear.

Her brother has been abducted. Kidnapped by Psy-L, the psychic terrorist group hellbent on exterminating Ultras.

Her brother's government handlers vow to rescue him, but things aren’t adding up. How was one of America’s strongest Ultras just swept away in the middle of the night? Morgan is determined to get to the bottom of it, but strange people have started following her, lurking in the shadows. As her search deepens, she decides to trust no one, including the mysterious new guy from school who claims he can help. But as the lurkers close in, and Morgan is forced to summon her thunder, her choices run dry.

There’s only one way to find her brother before getting kidnapped herself—Running off with the guy who claims to know where Psy-L is keeping him. And who promises to take her there.