Amy Smith is a second-year online college student, and mostly happily in love with her step-brother/online classmate/boyfriend, Austin Martinez. There's only one problem; Austin goes missing at inopportune times with no explanation. It isn't long and their younger brother, Simon, goes completely M.I.A.

Simon is a preteen cyber-hacking technology whiz with an unknown enemy, a strange fascination with keys in closets, and secret texter of Amy. In Amy's search for Simon, she discovers Simon's not the only one in her house keeping secrets. Austin's past shows up in the form of Riv, a mysterious hottie who's got his eye on Amy, who has many distractions; one of them being her five Russian sisters creep around the house hours before dawn. Amy also wonders what's up with Simon and all his hidden keys.

The mysteries continue when the KGB, interpol, CIA, and the FBI show up at Amy's door asking lots of questions. Can Amy keep her cool long enough to discover what's going on with Simon, save her relationship with Austin, uncover what her sisters are up to, and keep the wolves away, or will it all come crashing down on her?

There's only so much one book-loving college sophomore can handle, but Amy has always been a little too curious for her own good.