Lo Denham is used to being on her own. After her parents died in a tragic car accident, her sister Bea joined the elusive community called The Unity Project, leaving Lo to fend for herself. Desperate not to lose the only family she has left, Lo has spent the last six years trying to reconnect with Bea, only to be met with radio silence.

When Lo’s given the perfect opportunity to gain access to Bea’s reclusive life, she thinks they’re finally going to be reunited. But it’s difficult to find someone who doesn’t want to be found, and as Lo delves deeper into The Project and its charismatic leader, she begins to realize that there’s more at risk than just her relationship with Bea: her very life might be in danger.

As she uncovers more questions than answers at each turn, everything Lo thought she knew about herself, her sister, and the world is upended. One thing doesn’t change, though, and that’s what keeps her going: Bea needs her, and Lo will do anything to save her.